101398172 has 6 divisors (see below), whose sum is σ = 177446808. Its totient is φ = 50699084.

The previous prime is 101398151. The next prime is 101398189. The reversal of 101398172 is 271893101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12674768 + ... + 12674775.

It is an arithmetic number, because the mean of its divisors is an integer number (29574468).

Almost surely, 2^101398172 is an apocalyptic number.

It is an amenable number.

101398172 is a deficient number, since it is larger than the sum of its proper divisors (76048636).

101398172 is a wasteful number, since it uses less digits than its factorization.

101398172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25349547 (or 25349545 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 101398172 is about 10069.6659328897. The cubic root of 101398172 is about 466.3121254968.

The spelling of 101398172 in words is "one hundred one million, three hundred ninety-eight thousand, one hundred seventy-two".