390748736 has 42 divisors (see below), whose sum is σ = 901993878. Its totient is φ = 167462400.

The previous prime is 390748733. The next prime is 390748747. The reversal of 390748736 is 637847093.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 321126400 + 69622336 = 17920^2 + 8344^2 .

It is not an unprimeable number, because it can be changed into a prime (390748733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59165 + ... + 65436.

Almost surely, 2^390748736 is an apocalyptic number.

It is an amenable number.

390748736 is an abundant number, since it is smaller than the sum of its proper divisors (511245142).

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

390748736 is a wasteful number, since it uses less digits than its factorization.

390748736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124627 (or 124610 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 47.

The square root of 390748736 is about 19767.3654289083. The cubic root of 390748736 is about 731.0816117400.

The spelling of 390748736 in words is "three hundred ninety million, seven hundred forty-eight thousand, seven hundred thirty-six".