745242732 has 72 divisors (see below), whose sum is σ = 2078250720. Its totient is φ = 223706880.

The previous prime is 745242727. The next prime is 745242779. The reversal of 745242732 is 237242547.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 232 + ... + 38607.

Almost surely, 2^745242732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745242732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039125360).

745242732 is an abundant number, since it is smaller than the sum of its proper divisors (1333007988).

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

745242732 is a wasteful number, since it uses less digits than its factorization.

745242732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38903 (or 38898 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 745242732 is about 27299.1342719875. The cubic root of 745242732 is about 906.6352137902.

The spelling of 745242732 in words is "seven hundred forty-five million, two hundred forty-two thousand, seven hundred thirty-two".