74868390 has 48 divisors (see below), whose sum is σ = 199927728. Its totient is φ = 19424448.

The previous prime is 74868389. The next prime is 74868403. The reversal of 74868390 is 9386847.

It is a happy number.

74868390 is a `hidden beast` number, since 7 + 486 + 83 + 90 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7912 + ... + 14571.

It is an arithmetic number, because the mean of its divisors is an integer number (4165161).

Almost surely, 2^74868390 is an apocalyptic number.

74868390 is an abundant number, since it is smaller than the sum of its proper divisors (125059338).

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

74868390 is a wasteful number, since it uses less digits than its factorization.

74868390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22533 (or 22530 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 74868390 is about 8652.6521945586. The cubic root of 74868390 is about 421.4695122809.

It can be divided in two parts, 7486 and 8390, that added together give a square (15876 = 126²).

The spelling of 74868390 in words is "seventy-four million, eight hundred sixty-eight thousand, three hundred ninety".