28622572 has 24 divisors (see below), whose sum is σ = 54919872. Its totient is φ = 12944400.

The previous prime is 28622549. The next prime is 28622591. The reversal of 28622572 is 27522682.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7743 + ... + 10825.

It is an arithmetic number, because the mean of its divisors is an integer number (2288328).

Almost surely, 2^28622572 is an apocalyptic number.

28622572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28622572 is a deficient number, since it is larger than the sum of its proper divisors (26297300).

28622572 is a wasteful number, since it uses less digits than its factorization.

28622572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309 (or 3307 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 28622572 is about 5350.0067289677. The cubic root of 28622572 is about 305.8930094298.

The spelling of 28622572 in words is "twenty-eight million, six hundred twenty-two thousand, five hundred seventy-two".