18420060 has 48 divisors (see below), whose sum is σ = 51762816. Its totient is φ = 4894272.

The previous prime is 18420053. The next prime is 18420067. The reversal of 18420060 is 6002481.

It is an interprime number because it is at equal distance from previous prime (18420053) and next prime (18420067).

It is a super-2 number, since 2×18420060² = 678597220807200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18420067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31087 + ... + 31673.

It is an arithmetic number, because the mean of its divisors is an integer number (1078392).

Almost surely, 2^18420060 is an apocalyptic number.

18420060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18420060 is an abundant number, since it is smaller than the sum of its proper divisors (33342756).

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

18420060 is a wasteful number, since it uses less digits than its factorization.

18420060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 18420060 is about 4291.8597367575. The cubic root of 18420060 is about 264.0971290907.

The spelling of 18420060 in words is "eighteen million, four hundred twenty thousand, sixty".