103091640 has 64 divisors (see below), whose sum is σ = 316483200. Its totient is φ = 26850432.

The previous prime is 103091623. The next prime is 103091699. The reversal of 103091640 is 46190301.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 103091640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4830 + ... + 15149.

It is an arithmetic number, because the mean of its divisors is an integer number (4945050).

Almost surely, 2^103091640 is an apocalyptic number.

103091640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103091640 is an abundant number, since it is smaller than the sum of its proper divisors (213391560).

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

103091640 is a wasteful number, since it uses less digits than its factorization.

103091640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20036 (or 20032 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 103091640 is about 10153.4053400817. The cubic root of 103091640 is about 468.8937919753.

The spelling of 103091640 in words is "one hundred three million, ninety-one thousand, six hundred forty".