28497960 has 64 divisors (see below), whose sum is σ = 94996800. Its totient is φ = 7599168.

The previous prime is 28497947. The next prime is 28497977. The reversal of 28497960 is 6979482.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12114 + ... + 14273.

It is an arithmetic number, because the mean of its divisors is an integer number (1484325).

Almost surely, 2^28497960 is an apocalyptic number.

28497960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28497960 is an abundant number, since it is smaller than the sum of its proper divisors (66498840).

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

28497960 is a wasteful number, since it uses less digits than its factorization.

28497960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26407 (or 26397 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 28497960 is about 5338.3480590909. The cubic root of 28497960 is about 305.4484489739.

The spelling of 28497960 in words is "twenty-eight million, four hundred ninety-seven thousand, nine hundred sixty".