3198978 has 24 divisors (see below), whose sum is σ = 7233408. Its totient is φ = 1019832.

The previous prime is 3198977. The next prime is 3198991. The reversal of 3198978 is 8798913.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3198977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3450 + ... + 4277.

It is an arithmetic number, because the mean of its divisors is an integer number (301392).

Almost surely, 2^3198978 is an apocalyptic number.

3198978 is an abundant number, since it is smaller than the sum of its proper divisors (4034430).

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

3198978 is a wasteful number, since it uses less digits than its factorization.

3198978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7758 (or 7755 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 3198978 is about 1788.5687015041. The cubic root of 3198978 is about 147.3455704411.

The spelling of 3198978 in words is "three million, one hundred ninety-eight thousand, nine hundred seventy-eight".