745637920 has 96 divisors (see below), whose sum is σ = 1873331712. Its totient is φ = 279831552.

The previous prime is 745637917. The next prime is 745637941. The reversal of 745637920 is 29736547.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193129 + ... + 196951.

It is an arithmetic number, because the mean of its divisors is an integer number (19513872).

Almost surely, 2^745637920 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 745637920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (936665856).

745637920 is an abundant number, since it is smaller than the sum of its proper divisors (1127693792).

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

745637920 is a wasteful number, since it uses less digits than its factorization.

745637920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914 (or 3906 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 745637920 is about 27306.3714176747. The cubic root of 745637920 is about 906.7954425892.

The spelling of 745637920 in words is "seven hundred forty-five million, six hundred thirty-seven thousand, nine hundred twenty".