752313978 has 36 divisors (see below), whose sum is σ = 1765051470. Its totient is φ = 231480288.

The previous prime is 752313977. The next prime is 752314033. The reversal of 752313978 is 879313257.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 325189089 + 427124889 = 18033^2 + 20667^2 .

It is not an unprimeable number, because it can be changed into a prime (752313973) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 120613 + ... + 126696.

Almost surely, 2^752313978 is an apocalyptic number.

752313978 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

752313978 is an abundant number, since it is smaller than the sum of its proper divisors (1012737492).

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

752313978 is a wasteful number, since it uses less digits than its factorization.

752313978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247343 (or 247327 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 752313978 is about 27428.3426039562. The cubic root of 752313978 is about 909.4937320013.

The spelling of 752313978 in words is "seven hundred fifty-two million, three hundred thirteen thousand, nine hundred seventy-eight".