28556572 has 24 divisors (see below), whose sum is σ = 54763632. Its totient is φ = 12921600.

The previous prime is 28556557. The next prime is 28556579. The reversal of 28556572 is 27565582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28556579) 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, 9258 + ... + 11950.

It is an arithmetic number, because the mean of its divisors is an integer number (2281818).

Almost surely, 2^28556572 is an apocalyptic number.

28556572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28556572 is a deficient number, since it is larger than the sum of its proper divisors (26207060).

28556572 is a wasteful number, since it uses less digits than its factorization.

28556572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949 (or 2947 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 28556572 is about 5343.8349525411. The cubic root of 28556572 is about 305.6577117279.

The spelling of 28556572 in words is "twenty-eight million, five hundred fifty-six thousand, five hundred seventy-two".