100261020 has 48 divisors (see below), whose sum is σ = 281167488. Its totient is φ = 26694720.

The previous prime is 100260973. The next prime is 100261111. The reversal of 100261020 is 20162001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100260987 and 100261005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69547 + ... + 70973.

It is an arithmetic number, because the mean of its divisors is an integer number (5857656).

Almost surely, 2^100261020 is an apocalyptic number.

100261020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100261020 is an abundant number, since it is smaller than the sum of its proper divisors (180906468).

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

100261020 is a wasteful number, since it uses less digits than its factorization.

100261020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610 (or 2608 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 100261020 is about 10013.0424946666. The cubic root of 100261020 is about 464.5623816667.

The spelling of 100261020 in words is "one hundred million, two hundred sixty-one thousand, twenty".