164272772 has 12 divisors (see below), whose sum is σ = 287567616. Its totient is φ = 82110600.

The previous prime is 164272753. The next prime is 164272777. The reversal of 164272772 is 277272461.

It is not an unprimeable number, because it can be changed into a prime (164272777) 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, 19397 + ... + 26547.

It is an arithmetic number, because the mean of its divisors is an integer number (23963968).

Almost surely, 2^164272772 is an apocalyptic number.

It is an amenable number.

164272772 is a deficient number, since it is larger than the sum of its proper divisors (123294844).

164272772 is a wasteful number, since it uses less digits than its factorization.

164272772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12898 (or 12896 counting only the distinct ones).

The product of its digits is 65856, while the sum is 38.

The square root of 164272772 is about 12816.8940075199. The cubic root of 164272772 is about 547.6736695289.

The spelling of 164272772 in words is "one hundred sixty-four million, two hundred seventy-two thousand, seven hundred seventy-two".