431444420 has 48 divisors (see below), whose sum is σ = 1015132608. Its totient is φ = 152645760.

The previous prime is 431444393. The next prime is 431444441. The reversal of 431444420 is 24444134.

It is a happy number.

It is a super-2 number, since 2×431444420² = 372288575098272800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 431444420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18362 + ... + 34641.

It is an arithmetic number, because the mean of its divisors is an integer number (21148596).

Almost surely, 2^431444420 is an apocalyptic number.

It is an amenable number.

431444420 is an abundant number, since it is smaller than the sum of its proper divisors (583688188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431444420 is a wasteful number, since it uses less digits than its factorization.

431444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53060 (or 53058 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 431444420 is about 20771.2402133334. The cubic root of 431444420 is about 755.6284228871.

Adding to 431444420 its reverse (24444134), we get a palindrome (455888554).

The spelling of 431444420 in words is "four hundred thirty-one million, four hundred forty-four thousand, four hundred twenty".