540072444 has 12 divisors (see below), whose sum is σ = 1260169064. Its totient is φ = 180024144.

The previous prime is 540072413. The next prime is 540072457. The reversal of 540072444 is 444270045.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22503007 + ... + 22503030.

Almost surely, 2^540072444 is an apocalyptic number.

It is an amenable number.

540072444 is an abundant number, since it is smaller than the sum of its proper divisors (720096620).

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

540072444 is a wasteful number, since it uses less digits than its factorization.

540072444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45006044 (or 45006042 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 540072444 is about 23239.4587716668. The cubic root of 540072444 is about 814.3616987705.

The spelling of 540072444 in words is "five hundred forty million, seventy-two thousand, four hundred forty-four".