198402974 has 48 divisors (see below), whose sum is σ = 376566624. Its totient is φ = 76739520.

The previous prime is 198402973. The next prime is 198402979. The reversal of 198402974 is 479204891.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198402973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292724 + ... + 293400.

It is an arithmetic number, because the mean of its divisors is an integer number (7845138).

Almost surely, 2^198402974 is an apocalyptic number.

198402974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

198402974 is a deficient number, since it is larger than the sum of its proper divisors (178163650).

198402974 is a wasteful number, since it uses less digits than its factorization.

198402974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 198402974 is about 14085.5590588375. The cubic root of 198402974 is about 583.2428085558.

The spelling of 198402974 in words is "one hundred ninety-eight million, four hundred two thousand, nine hundred seventy-four".