790309640 has 32 divisors (see below), whose sum is σ = 1826259480. Its totient is φ = 307579392.

The previous prime is 790309633. The next prime is 790309657. The reversal of 790309640 is 46903097.

It can be written as a sum of positive squares in 4 ways, for example, as 717275524 + 73034116 = 26782^2 + 8546^2 .

It is a junction number, because it is equal to n+sod(n) for n = 790309594 and 790309603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265517 + ... + 268476.

Almost surely, 2^790309640 is an apocalyptic number.

It is an amenable number.

790309640 is an abundant number, since it is smaller than the sum of its proper divisors (1035949840).

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

790309640 is a wasteful number, since it uses less digits than its factorization.

790309640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534041 (or 534037 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 790309640 is about 28112.4463538839. The cubic root of 790309640 is about 924.5543078094.

The spelling of 790309640 in words is "seven hundred ninety million, three hundred nine thousand, six hundred forty".