74761830 has 192 divisors, whose sum is σ = 236029248. Its totient is φ = 16174080.

The previous prime is 74761811. The next prime is 74761847. The reversal of 74761830 is 3816747.

74761830 = 1651² + 1652² + ... + 1677².

74761830 is a `hidden beast` number, since 7 + 4 + 7 + 618 + 30 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 476112 + ... + 476268.

It is an arithmetic number, because the mean of its divisors is an integer number (1229319).

Almost surely, 2^74761830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74761830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118014624).

74761830 is an abundant number, since it is smaller than the sum of its proper divisors (161267418).

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

74761830 is a wasteful number, since it uses less digits than its factorization.

74761830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 74761830 is about 8646.4923523935. The cubic root of 74761830 is about 421.2694584900.

The spelling of 74761830 in words is "seventy-four million, seven hundred sixty-one thousand, eight hundred thirty".