74763780 has 96 divisors (see below), whose sum is σ = 257666304. Its totient is φ = 15773184.

The previous prime is 74763749. The next prime is 74763811. The reversal of 74763780 is 8736747.

It is an interprime number because it is at equal distance from previous prime (74763749) and next prime (74763811).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1387 + ... + 12306.

It is an arithmetic number, because the mean of its divisors is an integer number (2684024).

Almost surely, 2^74763780 is an apocalyptic number.

74763780 is a gapful number since it is divisible by the number (70) 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 74763780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128833152).

74763780 is an abundant number, since it is smaller than the sum of its proper divisors (182902524).

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

74763780 is a wasteful number, since it uses less digits than its factorization.

74763780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13725 (or 13723 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 74763780 is about 8646.6051141474. The cubic root of 74763780 is about 421.2731210912.

The spelling of 74763780 in words is "seventy-four million, seven hundred sixty-three thousand, seven hundred eighty".