172400898 has 8 divisors (see below), whose sum is σ = 344801808. Its totient is φ = 57466964.

The previous prime is 172400881. The next prime is 172400909. The reversal of 172400898 is 898004271.

It is a sphenic number, since it is the product of 3 distinct primes.

172400898 is an admirable 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, 14366736 + ... + 14366747.

It is an arithmetic number, because the mean of its divisors is an integer number (43100226).

Almost surely, 2^172400898 is an apocalyptic number.

172400898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

172400898 is a wasteful number, since it uses less digits than its factorization.

172400898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28733488.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 172400898 is about 13130.1522458805. The cubic root of 172400898 is about 556.5615175837.

The spelling of 172400898 in words is "one hundred seventy-two million, four hundred thousand, eight hundred ninety-eight".