74477628 has 18 divisors (see below), whose sum is σ = 188262984. Its totient is φ = 24825864.

The previous prime is 74477621. The next prime is 74477653. The reversal of 74477628 is 82677447.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74477621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1034376 + ... + 1034447.

Almost surely, 2^74477628 is an apocalyptic number.

It is an amenable number.

74477628 is an abundant number, since it is smaller than the sum of its proper divisors (113785356).

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

74477628 is a wasteful number, since it uses less digits than its factorization.

74477628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068833 (or 2068828 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 74477628 is about 8630.0421783442. The cubic root of 74477628 is about 420.7349716026.

The spelling of 74477628 in words is "seventy-four million, four hundred seventy-seven thousand, six hundred twenty-eight".