172672470 has 48 divisors (see below), whose sum is σ = 451273680. Its totient is φ = 45807552.

The previous prime is 172672447. The next prime is 172672531. The reversal of 172672470 is 74276271.

It is a happy number.

172672470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12861 + ... + 22599.

It is an arithmetic number, because the mean of its divisors is an integer number (9401535).

Almost surely, 2^172672470 is an apocalyptic number.

172672470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172672470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225636840).

172672470 is an abundant number, since it is smaller than the sum of its proper divisors (278601210).

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

172672470 is a wasteful number, since it uses less digits than its factorization.

172672470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9949 (or 9946 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 172672470 is about 13140.4897169017. The cubic root of 172672470 is about 556.8536027406.

The spelling of 172672470 in words is "one hundred seventy-two million, six hundred seventy-two thousand, four hundred seventy".