100639140 has 72 divisors (see below), whose sum is σ = 327805632. Its totient is φ = 23002560.

The previous prime is 100639129. The next prime is 100639151. The reversal of 100639140 is 41936001.

It is an interprime number because it is at equal distance from previous prime (100639129) and next prime (100639151).

It is a self number, because there is not a number n which added to its sum of digits gives 100639140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14176 + ... + 20055.

It is an arithmetic number, because the mean of its divisors is an integer number (4552856).

Almost surely, 2^100639140 is an apocalyptic number.

100639140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100639140 is an abundant number, since it is smaller than the sum of its proper divisors (227166492).

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

100639140 is a wasteful number, since it uses less digits than its factorization.

100639140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34257 (or 34248 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 100639140 is about 10031.9061000390. The cubic root of 100639140 is about 465.1456590740.

The spelling of 100639140 in words is "one hundred million, six hundred thirty-nine thousand, one hundred forty".