28631260 has 24 divisors (see below), whose sum is σ = 68715360. Its totient is φ = 9816384.

The previous prime is 28631237. The next prime is 28631279. The reversal of 28631260 is 6213682.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102115 + ... + 102394.

It is an arithmetic number, because the mean of its divisors is an integer number (2863140).

Almost surely, 2^28631260 is an apocalyptic number.

28631260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28631260 is an abundant number, since it is smaller than the sum of its proper divisors (40084100).

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

28631260 is a wasteful number, since it uses less digits than its factorization.

28631260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204525 (or 204523 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 28631260 is about 5350.8186289576. The cubic root of 28631260 is about 305.9239562133.

The spelling of 28631260 in words is "twenty-eight million, six hundred thirty-one thousand, two hundred sixty".