74997400 has 24 divisors (see below), whose sum is σ = 174369420. Its totient is φ = 29998880.

The previous prime is 74997397. The next prime is 74997407. The reversal of 74997400 is 479947.

It is a super-2 number, since 2×74997400² = 11249220013520000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74997407) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 187294 + ... + 187693.

Almost surely, 2^74997400 is an apocalyptic number.

It is an amenable number.

74997400 is an abundant number, since it is smaller than the sum of its proper divisors (99372020).

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

74997400 is a wasteful number, since it uses less digits than its factorization.

74997400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375003 (or 374994 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 74997400 is about 8660.1039254734. The cubic root of 74997400 is about 421.7114594281.

The spelling of 74997400 in words is "seventy-four million, nine hundred ninety-seven thousand, four hundred".