148971920 has 40 divisors (see below), whose sum is σ = 361423296. Its totient is φ = 56997248.

The previous prime is 148971883. The next prime is 148971929. The reversal of 148971920 is 29179841.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (148971929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38642 + ... + 42321.

Almost surely, 2^148971920 is an apocalyptic number.

148971920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148971920 is an abundant number, since it is smaller than the sum of its proper divisors (212451376).

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

148971920 is a wasteful number, since it uses less digits than its factorization.

148971920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80999 (or 80993 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 148971920 is about 12205.4053599215. The cubic root of 148971920 is about 530.1126140196.

The spelling of 148971920 in words is "one hundred forty-eight million, nine hundred seventy-one thousand, nine hundred twenty".