428633544 has 32 divisors (see below), whose sum is σ = 1079413920. Its totient is φ = 141833856.

The previous prime is 428633533. The next prime is 428633549. The reversal of 428633544 is 445336824.

It is not an unprimeable number, because it can be changed into a prime (428633549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61894 + ... + 68469.

It is an arithmetic number, because the mean of its divisors is an integer number (33731685).

Almost surely, 2^428633544 is an apocalyptic number.

It is an amenable number.

428633544 is an abundant number, since it is smaller than the sum of its proper divisors (650780376).

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

428633544 is a wasteful number, since it uses less digits than its factorization.

428633544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130509 (or 130505 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The square root of 428633544 is about 20703.4669560439. The cubic root of 428633544 is about 753.9838640783.

The spelling of 428633544 in words is "four hundred twenty-eight million, six hundred thirty-three thousand, five hundred forty-four".