101029988 has 6 divisors (see below), whose sum is σ = 176802486. Its totient is φ = 50514992.

The previous prime is 101029979. The next prime is 101030009. The reversal of 101029988 is 889920101.

It can be written as a sum of positive squares in only one way, i.e., 94517284 + 6512704 = 9722^2 + 2552^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12628745 + ... + 12628752.

It is an arithmetic number, because the mean of its divisors is an integer number (29467081).

Almost surely, 2^101029988 is an apocalyptic number.

It is an amenable number.

101029988 is a deficient number, since it is larger than the sum of its proper divisors (75772498).

101029988 is a wasteful number, since it uses less digits than its factorization.

101029988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25257501 (or 25257499 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 101029988 is about 10051.3674691556. The cubic root of 101029988 is about 465.7470367810.

The spelling of 101029988 in words is "one hundred one million, twenty-nine thousand, nine hundred eighty-eight".