74929860 has 120 divisors (see below), whose sum is σ = 245399616. Its totient is φ = 19103040.

The previous prime is 74929849. The next prime is 74929861. The reversal of 74929860 is 6892947.

It is a happy number.

It is a super-2 number, since 2×74929860² = 11228967839239200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (74929861) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36255 + ... + 38265.

Almost surely, 2^74929860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74929860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122699808).

74929860 is an abundant number, since it is smaller than the sum of its proper divisors (170469756).

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

74929860 is a wasteful number, since it uses less digits than its factorization.

74929860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2044 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 74929860 is about 8656.2035558321. The cubic root of 74929860 is about 421.5848286101.

The spelling of 74929860 in words is "seventy-four million, nine hundred twenty-nine thousand, eight hundred sixty".