100045870 has 16 divisors (see below), whose sum is σ = 180228240. Its totient is φ = 39985984.

The previous prime is 100045831. The next prime is 100045873. The reversal of 100045870 is 78540001.

It is a super-2 number, since 2×100045870² = 20018352208113800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100045873) 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, 11946 + ... + 18514.

It is an arithmetic number, because the mean of its divisors is an integer number (11264265).

Almost surely, 2^100045870 is an apocalyptic number.

100045870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100045870 is a deficient number, since it is larger than the sum of its proper divisors (80182370).

100045870 is a wasteful number, since it uses less digits than its factorization.

100045870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8099.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 100045870 is about 10002.2932370532. The cubic root of 100045870 is about 464.2298424060.

Adding to 100045870 its reverse (78540001), we get a palindrome (178585871).

The spelling of 100045870 in words is "one hundred million, forty-five thousand, eight hundred seventy".