745183920 has 80 divisors (see below), whose sum is σ = 2487778272. Its totient is φ = 183429120.

The previous prime is 745183909. The next prime is 745183931. The reversal of 745183920 is 29381547.

It is an interprime number because it is at equal distance from previous prime (745183909) and next prime (745183931).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 116301 + ... + 122540.

Almost surely, 2^745183920 is an apocalyptic number.

It is an amenable number.

745183920 is an abundant number, since it is smaller than the sum of its proper divisors (1742594352).

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

745183920 is a wasteful number, since it uses less digits than its factorization.

745183920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238870 (or 238864 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 745183920 is about 27298.0570737186. The cubic root of 745183920 is about 906.6113636491.

The spelling of 745183920 in words is "seven hundred forty-five million, one hundred eighty-three thousand, nine hundred twenty".