13918620 has 48 divisors (see below), whose sum is σ = 39180960. Its totient is φ = 3691776.

The previous prime is 13918613. The next prime is 13918633. The reversal of 13918620 is 2681931.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13234 + ... + 14246.

It is an arithmetic number, because the mean of its divisors is an integer number (816270).

Almost surely, 2^13918620 is an apocalyptic number.

13918620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13918620 is an abundant number, since it is smaller than the sum of its proper divisors (25262340).

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

13918620 is a wasteful number, since it uses less digits than its factorization.

13918620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 13918620 is about 3730.7666772394. The cubic root of 13918620 is about 240.5463248722.

It can be divided in two parts, 1391 and 8620, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 13918620 in words is "thirteen million, nine hundred eighteen thousand, six hundred twenty".