789632720 has 20 divisors (see below), whose sum is σ = 1835896260. Its totient is φ = 315853056.

The previous prime is 789632717. The next prime is 789632731. The reversal of 789632720 is 27236987.

It can be written as a sum of positive squares in 2 ways, for example, as 379003024 + 410629696 = 19468^2 + 20264^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4935125 + ... + 4935284.

It is an arithmetic number, because the mean of its divisors is an integer number (91794813).

Almost surely, 2^789632720 is an apocalyptic number.

It is an amenable number.

789632720 is an abundant number, since it is smaller than the sum of its proper divisors (1046263540).

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

789632720 is a wasteful number, since it uses less digits than its factorization.

789632720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9870422 (or 9870416 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 789632720 is about 28100.4042675546. The cubic root of 789632720 is about 924.2902644351.

The spelling of 789632720 in words is "seven hundred eighty-nine million, six hundred thirty-two thousand, seven hundred twenty".