745422720 has 256 divisors, whose sum is σ = 2790720000. Its totient is φ = 165666816.

The previous prime is 745422719. The next prime is 745422737. The reversal of 745422720 is 27224547.

It is a happy number.

745422720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 496531 + ... + 498029.

It is an arithmetic number, because the mean of its divisors is an integer number (10901250).

Almost surely, 2^745422720 is an apocalyptic number.

745422720 is a gapful number since it is divisible by the number (70) 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 745422720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395360000).

745422720 is an abundant number, since it is smaller than the sum of its proper divisors (2045297280).

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

745422720 is a wasteful number, since it uses less digits than its factorization.

745422720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 745422720 is about 27302.4306610236. The cubic root of 745422720 is about 906.7081968674.

The spelling of 745422720 in words is "seven hundred forty-five million, four hundred twenty-two thousand, seven hundred twenty".