74287828 has 6 divisors (see below), whose sum is σ = 130003706. Its totient is φ = 37143912.

The previous prime is 74287819. The next prime is 74287849. The reversal of 74287828 is 82878247.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 10575504 = 7982^2 + 3252^2 .

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 as a sum of consecutive naturals, namely, 9285975 + ... + 9285982.

Almost surely, 2^74287828 is an apocalyptic number.

It is an amenable number.

74287828 is a deficient number, since it is larger than the sum of its proper divisors (55715878).

74287828 is a wasteful number, since it uses less digits than its factorization.

74287828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18571961 (or 18571959 counting only the distinct ones).

The product of its digits is 401408, while the sum is 46.

The square root of 74287828 is about 8619.0386934971. The cubic root of 74287828 is about 420.3772649508.

The spelling of 74287828 in words is "seventy-four million, two hundred eighty-seven thousand, eight hundred twenty-eight".