172390152 has 192 divisors, whose sum is σ = 517104000. Its totient is φ = 47703040.

The previous prime is 172390151. The next prime is 172390159. The reversal of 172390152 is 251093271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172390151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1936924 + ... + 1937012.

It is an arithmetic number, because the mean of its divisors is an integer number (2693250).

Almost surely, 2^172390152 is an apocalyptic number.

172390152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172390152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258552000).

172390152 is an abundant number, since it is smaller than the sum of its proper divisors (344713848).

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

172390152 is a wasteful number, since it uses less digits than its factorization.

172390152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 172390152 is about 13129.7430287116. The cubic root of 172390152 is about 556.5499535790.

The spelling of 172390152 in words is "one hundred seventy-two million, three hundred ninety thousand, one hundred fifty-two".