745737072 has 80 divisors (see below), whose sum is σ = 2002788480. Its totient is φ = 238899456.

The previous prime is 745737071. The next prime is 745737143. The reversal of 745737072 is 270737547.

It is a super-2 number, since 2×745737072² = 1112247561110266368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745737071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144879 + ... + 149937.

It is an arithmetic number, because the mean of its divisors is an integer number (25034856).

Almost surely, 2^745737072 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 745737072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1001394240).

745737072 is an abundant number, since it is smaller than the sum of its proper divisors (1257051408).

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

745737072 is a wasteful number, since it uses less digits than its factorization.

745737072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190 (or 5184 counting only the distinct ones).

The product of its (nonzero) digits is 288120, while the sum is 42.

The square root of 745737072 is about 27308.1869042967. The cubic root of 745737072 is about 906.8356348391.

The spelling of 745737072 in words is "seven hundred forty-five million, seven hundred thirty-seven thousand, seventy-two".