19117020 has 48 divisors (see below), whose sum is σ = 57647520. Its totient is φ = 4705536.

The previous prime is 19117013. The next prime is 19117031. The reversal of 19117020 is 2071191.

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, 11475 + ... + 13034.

It is an arithmetic number, because the mean of its divisors is an integer number (1200990).

Almost surely, 2^19117020 is an apocalyptic number.

19117020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19117020 is an abundant number, since it is smaller than the sum of its proper divisors (38530500).

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

19117020 is a wasteful number, since it uses less digits than its factorization.

19117020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24534 (or 24532 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 19117020 is about 4372.3014534682. The cubic root of 19117020 is about 267.3868622206.

The spelling of 19117020 in words is "nineteen million, one hundred seventeen thousand, twenty".