28952631 has 24 divisors (see below), whose sum is σ = 43380480. Its totient is φ = 18594576.

The previous prime is 28952629. The next prime is 28952669. The reversal of 28952631 is 13625982.

It is not a de Polignac number, because 28952631 - 2¹ = 28952629 is a prime.

It is a super-2 number, since 2×28952631² = 1676509683644322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28952431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30100 + ... + 31046.

It is an arithmetic number, because the mean of its divisors is an integer number (1807520).

Almost surely, 2^28952631 is an apocalyptic number.

28952631 is a deficient number, since it is larger than the sum of its proper divisors (14427849).

28952631 is a wasteful number, since it uses less digits than its factorization.

28952631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1072 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28952631 is about 5380.7649084494. The cubic root of 28952631 is about 307.0643125847.

The spelling of 28952631 in words is "twenty-eight million, nine hundred fifty-two thousand, six hundred thirty-one".