19147420 has 24 divisors (see below), whose sum is σ = 40370400. Its totient is φ = 7628352.

The previous prime is 19147411. The next prime is 19147433. The reversal of 19147420 is 2474191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3601 + ... + 7159.

It is an arithmetic number, because the mean of its divisors is an integer number (1682100).

Almost surely, 2^19147420 is an apocalyptic number.

19147420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19147420 is an abundant number, since it is smaller than the sum of its proper divisors (21222980).

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

19147420 is a wasteful number, since it uses less digits than its factorization.

19147420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837 (or 3835 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 19147420 is about 4375.7765025193. The cubic root of 19147420 is about 267.5285205565.

The spelling of 19147420 in words is "nineteen million, one hundred forty-seven thousand, four hundred twenty".