172078088 has 128 divisors (see below), whose sum is σ = 425779200. Its totient is φ = 63334656.

The previous prime is 172078073. The next prime is 172078099. The reversal of 172078088 is 880870271.

It is a super-2 number, since 2×172078088² = 59221736739471488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 719873 + ... + 720111.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^172078088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172078088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212889600).

172078088 is an abundant number, since it is smaller than the sum of its proper divisors (253701112).

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

172078088 is a wasteful number, since it uses less digits than its factorization.

172078088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 41.

The square root of 172078088 is about 13117.8537878725. The cubic root of 172078088 is about 556.2139248918.

The spelling of 172078088 in words is "one hundred seventy-two million, seventy-eight thousand, eighty-eight".