100490385 has 32 divisors (see below), whose sum is σ = 167868288. Its totient is φ = 51284480.

The previous prime is 100490359. The next prime is 100490387. The reversal of 100490385 is 583094001.

It is not a de Polignac number, because 100490385 - 2⁸ = 100490129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100490387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31054 + ... + 34136.

It is an arithmetic number, because the mean of its divisors is an integer number (5245884).

Almost surely, 2^100490385 is an apocalyptic number.

100490385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100490385 is a deficient number, since it is larger than the sum of its proper divisors (67377903).

100490385 is a wasteful number, since it uses less digits than its factorization.

100490385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 100490385 is about 10024.4892637979. The cubic root of 100490385 is about 464.9163683564.

The spelling of 100490385 in words is "one hundred million, four hundred ninety thousand, three hundred eighty-five".