172620768 has 24 divisors (see below), whose sum is σ = 453129768. Its totient is φ = 57540224.

The previous prime is 172620739. The next prime is 172620779. The reversal of 172620768 is 867026271.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898971 + ... + 899162.

It is an arithmetic number, because the mean of its divisors is an integer number (18880407).

Almost surely, 2^172620768 is an apocalyptic number.

It is an amenable number.

172620768 is an abundant number, since it is smaller than the sum of its proper divisors (280509000).

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

172620768 is a wasteful number, since it uses less digits than its factorization.

172620768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798146 (or 1798138 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 172620768 is about 13138.5222913386. The cubic root of 172620768 is about 556.7980190510.

The spelling of 172620768 in words is "one hundred seventy-two million, six hundred twenty thousand, seven hundred sixty-eight".