149915880 has 128 divisors (see below), whose sum is σ = 504115200. Its totient is φ = 39626496.

The previous prime is 149915879. The next prime is 149915891. The reversal of 149915880 is 88519941.

149915880 is a `hidden beast` number, since 1 + 499 + 158 + 8 + 0 = 666.

149915880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136614 + ... + 137706.

It is an arithmetic number, because the mean of its divisors is an integer number (3938400).

Almost surely, 2^149915880 is an apocalyptic number.

149915880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149915880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252057600).

149915880 is an abundant number, since it is smaller than the sum of its proper divisors (354199320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149915880 is a wasteful number, since it uses less digits than its factorization.

149915880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 149915880 is about 12244.0140476888. The cubic root of 149915880 is about 531.2299428644.

The spelling of 149915880 in words is "one hundred forty-nine million, nine hundred fifteen thousand, eight hundred eighty".