18898620 has 48 divisors (see below), whose sum is σ = 56988960. Its totient is φ = 4651776.

The previous prime is 18898609. The next prime is 18898631. The reversal of 18898620 is 2689881.

It is an interprime number because it is at equal distance from previous prime (18898609) and next prime (18898631).

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, 11335 + ... + 12894.

It is an arithmetic number, because the mean of its divisors is an integer number (1187270).

Almost surely, 2^18898620 is an apocalyptic number.

18898620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18898620 is an abundant number, since it is smaller than the sum of its proper divisors (38090340).

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

18898620 is a wasteful number, since it uses less digits than its factorization.

18898620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24254 (or 24252 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 18898620 is about 4347.2543058809. The cubic root of 18898620 is about 266.3647172564.

The spelling of 18898620 in words is "eighteen million, eight hundred ninety-eight thousand, six hundred twenty".