74773780 has 24 divisors (see below), whose sum is σ = 157191552. Its totient is φ = 29877792.

The previous prime is 74773771. The next prime is 74773807. The reversal of 74773780 is 8737747.

It is a super-2 number, since 2×74773780² = 11182236350976800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 29649 + ... + 32071.

It is an arithmetic number, because the mean of its divisors is an integer number (6549648).

Almost surely, 2^74773780 is an apocalyptic number.

It is an amenable number.

74773780 is an abundant number, since it is smaller than the sum of its proper divisors (82417772).

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

74773780 is a wasteful number, since it uses less digits than its factorization.

74773780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975 (or 3973 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 43.

The square root of 74773780 is about 8647.1833564462. The cubic root of 74773780 is about 421.2919026607.

The spelling of 74773780 in words is "seventy-four million, seven hundred seventy-three thousand, seven hundred eighty".