172071400 has 24 divisors (see below), whose sum is σ = 400066470. Its totient is φ = 68828480.

The previous prime is 172071329. The next prime is 172071461. The reversal of 172071400 is 4170271.

It can be written as a sum of positive squares in 3 ways, for example, as 79103236 + 92968164 = 8894^2 + 9642^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 429979 + ... + 430378.

Almost surely, 2^172071400 is an apocalyptic number.

172071400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172071400 is an abundant number, since it is smaller than the sum of its proper divisors (227995070).

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

172071400 is a wasteful number, since it uses less digits than its factorization.

172071400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860373 (or 860364 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 172071400 is about 13117.5988656461. The cubic root of 172071400 is about 556.2067188476.

The spelling of 172071400 in words is "one hundred seventy-two million, seventy-one thousand, four hundred".