745427520 has 168 divisors, whose sum is σ = 2618987904. Its totient is φ = 194515968.

The previous prime is 745427497. The next prime is 745427531. The reversal of 745427520 is 25724547.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132607 + ... + 138113.

Almost surely, 2^745427520 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 745427520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309493952).

745427520 is an abundant number, since it is smaller than the sum of its proper divisors (1873560384).

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

745427520 is a wasteful number, since it uses less digits than its factorization.

745427520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577 (or 5564 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 745427520 is about 27302.5185651434. The cubic root of 745427520 is about 906.7101430517.

The spelling of 745427520 in words is "seven hundred forty-five million, four hundred twenty-seven thousand, five hundred twenty".