28952731 has 2 divisors, whose sum is σ = 28952732. Its totient is φ = 28952730.

The previous prime is 28952719. The next prime is 28952753. The reversal of 28952731 is 13725982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28952731 - 2²³ = 20564123 is a prime.

It is a super-2 number, since 2×28952731² = 1676521264716722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28952711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14476365 + 14476366.

It is an arithmetic number, because the mean of its divisors is an integer number (14476366).

Almost surely, 2^28952731 is an apocalyptic number.

28952731 is a deficient number, since it is larger than the sum of its proper divisors (1).

28952731 is an equidigital number, since it uses as much as digits as its factorization.

28952731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 28952731 is about 5380.7742008005. The cubic root of 28952731 is about 307.0646661092.

The spelling of 28952731 in words is "twenty-eight million, nine hundred fifty-two thousand, seven hundred thirty-one".