100512930 has 64 divisors (see below), whose sum is σ = 282129408. Its totient is φ = 22438080.

The previous prime is 100512913. The next prime is 100512947. The reversal of 100512930 is 39215001.

It is an interprime number because it is at equal distance from previous prime (100512913) and next prime (100512947).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100512897 and 100512906.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3465 + ... + 14595.

It is an arithmetic number, because the mean of its divisors is an integer number (4408272).

Almost surely, 2^100512930 is an apocalyptic number.

100512930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100512930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141064704).

100512930 is an abundant number, since it is smaller than the sum of its proper divisors (181616478).

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

100512930 is a wasteful number, since it uses less digits than its factorization.

100512930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11191.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 100512930 is about 10025.6136969265. The cubic root of 100512930 is about 464.9511337249.

Adding to 100512930 its reverse (39215001), we get a palindrome (139727931).

The spelling of 100512930 in words is "one hundred million, five hundred twelve thousand, nine hundred thirty".