28468031 has 4 divisors (see below), whose sum is σ = 28950600. Its totient is φ = 27985464.

The previous prime is 28468019. The next prime is 28468039. The reversal of 28468031 is 13086482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28468031 - 2²² = 24273727 is a prime.

It is a super-2 number, since 2×28468031² = 1620857578033922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28468039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241196 + ... + 241313.

It is an arithmetic number, because the mean of its divisors is an integer number (7237650).

Almost surely, 2^28468031 is an apocalyptic number.

28468031 is a deficient number, since it is larger than the sum of its proper divisors (482569).

28468031 is an equidigital number, since it uses as much as digits as its factorization.

28468031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482568.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28468031 is about 5335.5441147085. The cubic root of 28468031 is about 305.3414826182.

The spelling of 28468031 in words is "twenty-eight million, four hundred sixty-eight thousand, thirty-one".