785464128 has 70 divisors (see below), whose sum is σ = 2328377106. Its totient is φ = 261819648.

The previous prime is 785464111. The next prime is 785464151. The reversal of 785464128 is 821464587.

It can be written as a sum of positive squares in only one way, i.e., 784448064 + 1016064 = 28008^2 + 1008^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 70575 + ... + 80942.

Almost surely, 2^785464128 is an apocalyptic number.

It is an amenable number.

785464128 is an abundant number, since it is smaller than the sum of its proper divisors (1542912978).

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

785464128 is a wasteful number, since it uses less digits than its factorization.

785464128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151541 (or 151522 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 785464128 is about 28026.1329476615. The cubic root of 785464128 is about 922.6609039182.

The spelling of 785464128 in words is "seven hundred eighty-five million, four hundred sixty-four thousand, one hundred twenty-eight".