172668576 has 24 divisors (see below), whose sum is σ = 453255264. Its totient is φ = 57556160.

The previous prime is 172668571. The next prime is 172668577. The reversal of 172668576 is 675866271.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (172668571) 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, 899220 + ... + 899411.

It is an arithmetic number, because the mean of its divisors is an integer number (18885636).

Almost surely, 2^172668576 is an apocalyptic number.

172668576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172668576 is an abundant number, since it is smaller than the sum of its proper divisors (280586688).

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

172668576 is a wasteful number, since it uses less digits than its factorization.

172668576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798644 (or 1798636 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 172668576 is about 13140.3415480725. The cubic root of 172668576 is about 556.8494167727.

The spelling of 172668576 in words is "one hundred seventy-two million, six hundred sixty-eight thousand, five hundred seventy-six".