28496431 has 2 divisors, whose sum is σ = 28496432. Its totient is φ = 28496430.

The previous prime is 28496423. The next prime is 28496441. The reversal of 28496431 is 13469482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28496431 - 2³ = 28496423 is a prime.

It is a super-2 number, since 2×28496431² = 1624093159475522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28496441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14248215 + 14248216.

It is an arithmetic number, because the mean of its divisors is an integer number (14248216).

Almost surely, 2^28496431 is an apocalyptic number.

28496431 is a deficient number, since it is larger than the sum of its proper divisors (1).

28496431 is an equidigital number, since it uses as much as digits as its factorization.

28496431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 28496431 is about 5338.2048480739. The cubic root of 28496431 is about 305.4429861380.

The spelling of 28496431 in words is "twenty-eight million, four hundred ninety-six thousand, four hundred thirty-one".