28574416 has 40 divisors (see below), whose sum is σ = 63136584. Its totient is φ = 12410880.

The previous prime is 28574393. The next prime is 28574419. The reversal of 28574416 is 61447582.

It can be written as a sum of positive squares in 4 ways, for example, as 1948816 + 26625600 = 1396^2 + 5160^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28574419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505 + ... + 7576.

Almost surely, 2^28574416 is an apocalyptic number.

28574416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28574416 is an abundant number, since it is smaller than the sum of its proper divisors (34562168).

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

28574416 is a wasteful number, since it uses less digits than its factorization.

28574416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8119 (or 8113 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 28574416 is about 5345.5042792986. The cubic root of 28574416 is about 305.7213633988.

The spelling of 28574416 in words is "twenty-eight million, five hundred seventy-four thousand, four hundred sixteen".