1044432540 has 72 divisors (see below), whose sum is σ = 3171888720. Its totient is φ = 278183424.

The previous prime is 1044432523. The next prime is 1044432541. The reversal of 1044432540 is 452344401.

It is a happy number.

It is a super-2 number, since 2×1044432540² = 2181678661221703200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044432541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172891 + ... + 178829.

It is an arithmetic number, because the mean of its divisors is an integer number (44054010).

Almost surely, 2^1044432540 is an apocalyptic number.

1044432540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044432540 is an abundant number, since it is smaller than the sum of its proper divisors (2127456180).

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

1044432540 is a wasteful number, since it uses less digits than its factorization.

1044432540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931 (or 6926 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1044432540 is about 32317.6815381302. The cubic root of 1044432540 is about 1014.5967450166.

Adding to 1044432540 its reverse (452344401), we get a palindrome (1496776941).

The spelling of 1044432540 in words is "one billion, forty-four million, four hundred thirty-two thousand, five hundred forty".