749538432 has 96 divisors (see below), whose sum is σ = 2283809580. Its totient is φ = 235143168.

The previous prime is 749538431. The next prime is 749538443. The reversal of 749538432 is 234835947.

749538432 is a `hidden beast` number, since 74 + 9 + 538 + 43 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 648415296 + 101123136 = 25464^2 + 10056^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×749538432² = 1123615722090037248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (749538431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448 + ... + 38720.

Almost surely, 2^749538432 is an apocalyptic number.

749538432 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749538432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141904790).

749538432 is an abundant number, since it is smaller than the sum of its proper divisors (1534271148).

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

749538432 is a wasteful number, since it uses less digits than its factorization.

749538432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38310 (or 38295 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 749538432 is about 27377.6995381277. The cubic root of 749538432 is about 908.3738748975.

The spelling of 749538432 in words is "seven hundred forty-nine million, five hundred thirty-eight thousand, four hundred thirty-two".