19678974 has 32 divisors (see below), whose sum is σ = 45427200. Its totient is φ = 5566752.

The previous prime is 19678973. The next prime is 19678987. The reversal of 19678974 is 47987691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19678973) 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, 2052 + ... + 6600.

It is an arithmetic number, because the mean of its divisors is an integer number (1419600).

Almost surely, 2^19678974 is an apocalyptic number.

19678974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19678974 is an abundant number, since it is smaller than the sum of its proper divisors (25748226).

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

19678974 is a wasteful number, since it uses less digits than its factorization.

19678974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664.

The product of its digits is 762048, while the sum is 51.

The square root of 19678974 is about 4436.0989619259. The cubic root of 19678974 is about 269.9815899656.

The spelling of 19678974 in words is "nineteen million, six hundred seventy-eight thousand, nine hundred seventy-four".