100513780 has 24 divisors (see below), whose sum is σ = 217889280. Its totient is φ = 38908320.

The previous prime is 100513759. The next prime is 100513789. The reversal of 100513780 is 87315001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100513789) 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, 80440 + ... + 81679.

It is an arithmetic number, because the mean of its divisors is an integer number (9078720).

Almost surely, 2^100513780 is an apocalyptic number.

100513780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100513780 is an abundant number, since it is smaller than the sum of its proper divisors (117375500).

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

100513780 is a wasteful number, since it uses less digits than its factorization.

100513780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162159 (or 162157 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 100513780 is about 10025.6560882568. The cubic root of 100513780 is about 464.9524443601.

Adding to 100513780 its reverse (87315001), we get a palindrome (187828781).

It can be divided in two parts, 10051 and 3780, that added together give a palindrome (13831).

The spelling of 100513780 in words is "one hundred million, five hundred thirteen thousand, seven hundred eighty".