102758780 has 12 divisors (see below), whose sum is σ = 215793480. Its totient is φ = 41103504.

The previous prime is 102758759. The next prime is 102758791. The reversal of 102758780 is 87857201.

It is a congruent number.

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, 2568950 + ... + 2568989.

It is an arithmetic number, because the mean of its divisors is an integer number (17982790).

Almost surely, 2^102758780 is an apocalyptic number.

102758780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102758780 is an abundant number, since it is smaller than the sum of its proper divisors (113034700).

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

102758780 is a wasteful number, since it uses less digits than its factorization.

102758780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137948 (or 5137946 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 102758780 is about 10137.0005425668. Note that the first 3 decimals coincide. The cubic root of 102758780 is about 468.3885965725.

The spelling of 102758780 in words is "one hundred two million, seven hundred fifty-eight thousand, seven hundred eighty".