28960631 has 16 divisors (see below), whose sum is σ = 33965568. Its totient is φ = 24180000.

The previous prime is 28960619. The next prime is 28960643. The reversal of 28960631 is 13606982.

It is an interprime number because it is at equal distance from previous prime (28960619) and next prime (28960643).

It is a cyclic number.

It is not a de Polignac number, because 28960631 - 2¹⁴ = 28944247 is a prime.

It is a super-2 number, since 2×28960631² = 1677436295836322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28960591 and 28960600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28960651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92966 + ... + 93276.

It is an arithmetic number, because the mean of its divisors is an integer number (2122848).

Almost surely, 2^28960631 is an apocalyptic number.

28960631 is a deficient number, since it is larger than the sum of its proper divisors (5004937).

28960631 is a wasteful number, since it uses less digits than its factorization.

28960631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 28960631 is about 5381.5082458359. The cubic root of 28960631 is about 307.0925919752.

The spelling of 28960631 in words is "twenty-eight million, nine hundred sixty thousand, six hundred thirty-one".