172740996 has 18 divisors (see below), whose sum is σ = 436650942. Its totient is φ = 57580320.

The previous prime is 172740947. The next prime is 172741013. The reversal of 172740996 is 699047271.

It can be written as a sum of positive squares in only one way, i.e., 119246400 + 53494596 = 10920^2 + 7314^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2399145 + ... + 2399216.

Almost surely, 2^172740996 is an apocalyptic number.

It is an amenable number.

172740996 is an abundant number, since it is smaller than the sum of its proper divisors (263909946).

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

172740996 is a wasteful number, since it uses less digits than its factorization.

172740996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4798371 (or 4798366 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 172740996 is about 13143.0968953287. The cubic root of 172740996 is about 556.9272564489.

The spelling of 172740996 in words is "one hundred seventy-two million, seven hundred forty thousand, nine hundred ninety-six".