103490388 has 18 divisors (see below), whose sum is σ = 261600794. Its totient is φ = 34496784.

The previous prime is 103490371. The next prime is 103490399. The reversal of 103490388 is 883094301.

It can be written as a sum of positive squares in only one way, i.e., 101364624 + 2125764 = 10068^2 + 1458^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2874733 = 103490388 / (1 + 0 + 3 + 4 + 9 + 0 + 3 + 8 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1437331 + ... + 1437402.

Almost surely, 2^103490388 is an apocalyptic number.

103490388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

103490388 is an abundant number, since it is smaller than the sum of its proper divisors (158110406).

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

103490388 is a wasteful number, since it uses less digits than its factorization.

103490388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874743 (or 2874738 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 103490388 is about 10173.0225596919. The cubic root of 103490388 is about 469.4975587389.

The spelling of 103490388 in words is "one hundred three million, four hundred ninety thousand, three hundred eighty-eight".