780164272 has 20 divisors (see below), whose sum is σ = 1600484616. Its totient is φ = 367136000.

The previous prime is 780164267. The next prime is 780164279. The reversal of 780164272 is 272461087.

It is not an unprimeable number, because it can be changed into a prime (780164279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433854 + ... + 1434397.

Almost surely, 2^780164272 is an apocalyptic number.

It is an amenable number.

780164272 is an abundant number, since it is smaller than the sum of its proper divisors (820320344).

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

780164272 is a wasteful number, since it uses less digits than its factorization.

780164272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868276 (or 2868270 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 780164272 is about 27931.4208732746. The cubic root of 780164272 is about 920.5810255409.

The spelling of 780164272 in words is "seven hundred eighty million, one hundred sixty-four thousand, two hundred seventy-two".