101992870 has 32 divisors (see below), whose sum is σ = 210355200. Its totient is φ = 34878816.

The previous prime is 101992859. The next prime is 101992889. The reversal of 101992870 is 78299101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29071 + ... + 32389.

It is an arithmetic number, because the mean of its divisors is an integer number (6573600).

Almost surely, 2^101992870 is an apocalyptic number.

101992870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101992870 is an abundant number, since it is smaller than the sum of its proper divisors (108362330).

101992870 is a wasteful number, since it uses less digits than its factorization.

101992870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 101992870 is about 10099.1519445942. The cubic root of 101992870 is about 467.2219857505.

The spelling of 101992870 in words is "one hundred one million, nine hundred ninety-two thousand, eight hundred seventy".