431426644 has 24 divisors (see below), whose sum is σ = 837597600. Its totient is φ = 192778080.

The previous prime is 431426599. The next prime is 431426657. The reversal of 431426644 is 446624134.

It is a super-2 number, since 2×431426644² = 372257898306205472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80499 + ... + 85690.

It is an arithmetic number, because the mean of its divisors is an integer number (34899900).

Almost surely, 2^431426644 is an apocalyptic number.

431426644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

431426644 is a deficient number, since it is larger than the sum of its proper divisors (406170956).

431426644 is a wasteful number, since it uses less digits than its factorization.

431426644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166263 (or 166261 counting only the distinct ones).

The product of its digits is 55296, while the sum is 34.

The square root of 431426644 is about 20770.8123095848. The cubic root of 431426644 is about 755.6180451615.

The spelling of 431426644 in words is "four hundred thirty-one million, four hundred twenty-six thousand, six hundred forty-four".