28597760 has 40 divisors (see below), whose sum is σ = 68573736. Its totient is φ = 11438080.

The previous prime is 28597753. The next prime is 28597771. The reversal of 28597760 is 6779582.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3026 + ... + 8145.

Almost surely, 2^28597760 is an apocalyptic number.

28597760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28597760 is an abundant number, since it is smaller than the sum of its proper divisors (39975976).

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

28597760 is an equidigital number, since it uses as much as digits as its factorization.

28597760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11194 (or 11178 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 28597760 is about 5347.6873506218. The cubic root of 28597760 is about 305.8045942269.

The spelling of 28597760 in words is "twenty-eight million, five hundred ninety-seven thousand, seven hundred sixty".