28797936 has 40 divisors (see below), whose sum is σ = 74638080. Its totient is φ = 9567936.

The previous prime is 28797919. The next prime is 28797947. The reversal of 28797936 is 63979782.

It is a super-2 number, since 2×28797936² = 1658642235720192, which contains 22 as substring.

It is a congruent 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, 17401 + ... + 18983.

It is an arithmetic number, because the mean of its divisors is an integer number (1865952).

Almost surely, 2^28797936 is an apocalyptic number.

It is an amenable number.

28797936 is an abundant number, since it is smaller than the sum of its proper divisors (45840144).

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

28797936 is a wasteful number, since it uses less digits than its factorization.

28797936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973 (or 1967 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 28797936 is about 5366.3708407079. The cubic root of 28797936 is about 306.5164502701.

The spelling of 28797936 in words is "twenty-eight million, seven hundred ninety-seven thousand, nine hundred thirty-six".