28822928 has 10 divisors (see below), whose sum is σ = 55844454. Its totient is φ = 14411456.

The previous prime is 28822921. The next prime is 28822949. The reversal of 28822928 is 82922882.

It can be written as a sum of positive squares in only one way, i.e., 27541504 + 1281424 = 5248^2 + 1132^2 .

It is a super-2 number, since 2×28822928² = 1661522356986368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28822921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900701 + ... + 900732.

Almost surely, 2^28822928 is an apocalyptic number.

It is an amenable number.

28822928 is a deficient number, since it is larger than the sum of its proper divisors (27021526).

28822928 is a wasteful number, since it uses less digits than its factorization.

28822928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801441 (or 1801435 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 28822928 is about 5368.6989112820. The cubic root of 28822928 is about 306.6050937083.

The spelling of 28822928 in words is "twenty-eight million, eight hundred twenty-two thousand, nine hundred twenty-eight".