100232780 has 12 divisors (see below), whose sum is σ = 210488880. Its totient is φ = 40093104.

The previous prime is 100232777. The next prime is 100232791. The reversal of 100232780 is 87232001.

It is a super-2 number, since 2×100232780² = 20093220373056800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505800 + ... + 2505839.

It is an arithmetic number, because the mean of its divisors is an integer number (17540740).

Almost surely, 2^100232780 is an apocalyptic number.

100232780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100232780 is an abundant number, since it is smaller than the sum of its proper divisors (110256100).

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

100232780 is a wasteful number, since it uses less digits than its factorization.

100232780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011648 (or 5011646 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 100232780 is about 10011.6322345560. The cubic root of 100232780 is about 464.5187606144.

Adding to 100232780 its reverse (87232001), we get a palindrome (187464781).

The spelling of 100232780 in words is "one hundred million, two hundred thirty-two thousand, seven hundred eighty".