28797810 has 16 divisors (see below), whose sum is σ = 69114816. Its totient is φ = 7679408.

The previous prime is 28797809. The next prime is 28797823. The reversal of 28797810 is 1879782.

It is a super-2 number, since 2×28797810² = 1658627721592200, which contains 22 as substring.

It is a Curzon 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, 479934 + ... + 479993.

It is an arithmetic number, because the mean of its divisors is an integer number (4319676).

Almost surely, 2^28797810 is an apocalyptic number.

28797810 is an abundant number, since it is smaller than the sum of its proper divisors (40317006).

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

28797810 is a wasteful number, since it uses less digits than its factorization.

28797810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959937.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 28797810 is about 5366.3591009175. The cubic root of 28797810 is about 306.5160032343.

The spelling of 28797810 in words is "twenty-eight million, seven hundred ninety-seven thousand, eight hundred ten".