18797020 has 48 divisors (see below), whose sum is σ = 44085888. Its totient is φ = 6672960.

The previous prime is 18796993. The next prime is 18797021. The reversal of 18797020 is 2079781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18797021) 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, 8467 + ... + 10453.

It is an arithmetic number, because the mean of its divisors is an integer number (918456).

Almost surely, 2^18797020 is an apocalyptic number.

18797020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18797020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22042944).

18797020 is an abundant number, since it is smaller than the sum of its proper divisors (25288868).

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

18797020 is a wasteful number, since it uses less digits than its factorization.

18797020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 18797020 is about 4335.5530212419. The cubic root of 18797020 is about 265.8865289477.

The spelling of 18797020 in words is "eighteen million, seven hundred ninety-seven thousand, twenty".