28631460 has 192 divisors, whose sum is σ = 97542144. Its totient is φ = 6182400.

The previous prime is 28631459. The next prime is 28631467. The reversal of 28631460 is 6413682.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (28631467) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 403225 + ... + 403295.

It is an arithmetic number, because the mean of its divisors is an integer number (508032).

Almost surely, 2^28631460 is an apocalyptic number.

28631460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28631460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48771072).

28631460 is an abundant number, since it is smaller than the sum of its proper divisors (68910684).

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

28631460 is a wasteful number, since it uses less digits than its factorization.

28631460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 28631460 is about 5350.8373176541. The cubic root of 28631460 is about 305.9246685425.

The spelling of 28631460 in words is "twenty-eight million, six hundred thirty-one thousand, four hundred sixty".