28264031 has 2 divisors, whose sum is σ = 28264032. Its totient is φ = 28264030.

The previous prime is 28264021. The next prime is 28264051. The reversal of 28264031 is 13046282.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28264031 is a prime.

It is a super-2 number, since 2×28264031² = 1597710896737922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28264021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14132015 + 14132016.

It is an arithmetic number, because the mean of its divisors is an integer number (14132016).

Almost surely, 2^28264031 is an apocalyptic number.

28264031 is a deficient number, since it is larger than the sum of its proper divisors (1).

28264031 is an equidigital number, since it uses as much as digits as its factorization.

28264031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 28264031 is about 5316.3926679658. The cubic root of 28264031 is about 304.6103812941.

The spelling of 28264031 in words is "twenty-eight million, two hundred sixty-four thousand, thirty-one".