100993890 has 16 divisors (see below), whose sum is σ = 242385408. Its totient is φ = 26931696.

The previous prime is 100993883. The next prime is 100993891. The reversal of 100993890 is 98399001.

It is not an unprimeable number, because it can be changed into a prime (100993891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683202 + ... + 1683261.

It is an arithmetic number, because the mean of its divisors is an integer number (15149088).

Almost surely, 2^100993890 is an apocalyptic number.

100993890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100993890 is an abundant number, since it is smaller than the sum of its proper divisors (141391518).

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

100993890 is a wasteful number, since it uses less digits than its factorization.

100993890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366473.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 100993890 is about 10049.5716326618. The cubic root of 100993890 is about 465.6915597237.

The spelling of 100993890 in words is "one hundred million, nine hundred ninety-three thousand, eight hundred ninety".