745122944 has 64 divisors (see below), whose sum is σ = 1552358400. Its totient is φ = 355829760.

The previous prime is 745122929. The next prime is 745122947. The reversal of 745122944 is 449221547.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 745122898 and 745122907.

It is not an unprimeable number, because it can be changed into a prime (745122947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312284 + ... + 314660.

It is an arithmetic number, because the mean of its divisors is an integer number (24255600).

Almost surely, 2^745122944 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 745122944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776179200).

745122944 is an abundant number, since it is smaller than the sum of its proper divisors (807235456).

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

745122944 is a wasteful number, since it uses less digits than its factorization.

745122944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2489 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 745122944 is about 27296.9401948277. The cubic root of 745122944 is about 906.5866346120.

The spelling of 745122944 in words is "seven hundred forty-five million, one hundred twenty-two thousand, nine hundred forty-four".