19678460 has 12 divisors (see below), whose sum is σ = 41324808. Its totient is φ = 7871376.

The previous prime is 19678457. The next prime is 19678489. The reversal of 19678460 is 6487691.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491942 + ... + 491981.

It is an arithmetic number, because the mean of its divisors is an integer number (3443734).

Almost surely, 2^19678460 is an apocalyptic number.

19678460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19678460 is an abundant number, since it is smaller than the sum of its proper divisors (21646348).

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

19678460 is a wasteful number, since it uses less digits than its factorization.

19678460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983932 (or 983930 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 19678460 is about 4436.0410277634. The cubic root of 19678460 is about 269.9792393731.

The spelling of 19678460 in words is "nineteen million, six hundred seventy-eight thousand, four hundred sixty".