101070990 has 48 divisors (see below), whose sum is σ = 272523888. Its totient is φ = 26951616.

The previous prime is 101070979. The next prime is 101071007. The reversal of 101070990 is 99070101.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 23 ways as a sum of consecutive naturals, for example, 18367 + ... + 23226.

It is an arithmetic number, because the mean of its divisors is an integer number (5677581).

Almost surely, 2^101070990 is an apocalyptic number.

101070990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101070990 is an abundant number, since it is smaller than the sum of its proper divisors (171452898).

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

101070990 is an equidigital number, since it uses as much as digits as its factorization.

101070990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41615 (or 41603 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 101070990 is about 10053.4068852305. The cubic root of 101070990 is about 465.8100345027.

The spelling of 101070990 in words is "one hundred one million, seventy thousand, nine hundred ninety".