18235020 has 24 divisors (see below), whose sum is σ = 51058224. Its totient is φ = 4862656.

The previous prime is 18234977. The next prime is 18235027. The reversal of 18235020 is 2053281.

It is not an unprimeable number, because it can be changed into a prime (18235027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151899 + ... + 152018.

It is an arithmetic number, because the mean of its divisors is an integer number (2127426).

Almost surely, 2^18235020 is an apocalyptic number.

18235020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18235020 is an abundant number, since it is smaller than the sum of its proper divisors (32823204).

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

18235020 is a wasteful number, since it uses less digits than its factorization.

18235020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303929 (or 303927 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 18235020 is about 4270.2482363441. The cubic root of 18235020 is about 263.2098158465.

The spelling of 18235020 in words is "eighteen million, two hundred thirty-five thousand, twenty".