28794131 has 2 divisors, whose sum is σ = 28794132. Its totient is φ = 28794130.

The previous prime is 28794109. The next prime is 28794149. The reversal of 28794131 is 13149782.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28794131 is a prime.

It is a super-2 number, since 2×28794131² = 1658203960090322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28794091 and 28794100.

It is not a weakly prime, because it can be changed into another prime (28794151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14397065 + 14397066.

It is an arithmetic number, because the mean of its divisors is an integer number (14397066).

Almost surely, 2^28794131 is an apocalyptic number.

28794131 is a deficient number, since it is larger than the sum of its proper divisors (1).

28794131 is an equidigital number, since it uses as much as digits as its factorization.

28794131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 28794131 is about 5366.0163063487. The cubic root of 28794131 is about 306.5029499222.

The spelling of 28794131 in words is "twenty-eight million, seven hundred ninety-four thousand, one hundred thirty-one".