89278431 has 16 divisors (see below), whose sum is σ = 130585728. Its totient is φ = 53805600.

The previous prime is 89278421. The next prime is 89278457. The reversal of 89278431 is 13487298.

It is not a de Polignac number, because 89278431 - 2⁹ = 89277919 is a prime.

It is a super-2 number, since 2×89278431² = 15941276483643522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89278421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501 + ... + 13446.

It is an arithmetic number, because the mean of its divisors is an integer number (8161608).

Almost surely, 2^89278431 is an apocalyptic number.

89278431 is a deficient number, since it is larger than the sum of its proper divisors (41307297).

89278431 is a wasteful number, since it uses less digits than its factorization.

89278431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15142.

The product of its digits is 96768, while the sum is 42.

The square root of 89278431 is about 9448.7264221164. The cubic root of 89278431 is about 446.9396141821.

The spelling of 89278431 in words is "eighty-nine million, two hundred seventy-eight thousand, four hundred thirty-one".