100504990 has 16 divisors (see below), whose sum is σ = 181617552. Its totient is φ = 40044544.

The previous prime is 100504979. The next prime is 100504991. The reversal of 100504990 is 99405001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100504991) 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, 16984 + ... + 22123.

It is an arithmetic number, because the mean of its divisors is an integer number (11351097).

Almost surely, 2^100504990 is an apocalyptic number.

100504990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100504990 is a deficient number, since it is larger than the sum of its proper divisors (81112562).

100504990 is a wasteful number, since it uses less digits than its factorization.

100504990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39371.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 100504990 is about 10025.2177033718. The cubic root of 100504990 is about 464.9388904934.

Adding to 100504990 its reverse (99405001), we get a palindrome (199909991).

The spelling of 100504990 in words is "one hundred million, five hundred four thousand, nine hundred ninety".