745387520 has 40 divisors (see below), whose sum is σ = 1787189184. Its totient is φ = 298153984.

The previous prime is 745387507. The next prime is 745387541. The reversal of 745387520 is 25783547.

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 8.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 143024 + ... + 148143.

Almost surely, 2^745387520 is an apocalyptic number.

It is an amenable number.

745387520 is an abundant number, since it is smaller than the sum of its proper divisors (1041801664).

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

745387520 is an equidigital number, since it uses as much as digits as its factorization.

745387520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291190 (or 291174 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 745387520 is about 27301.7860221635. The cubic root of 745387520 is about 906.6939245938.

The spelling of 745387520 in words is "seven hundred forty-five million, three hundred eighty-seven thousand, five hundred twenty".