199531472 has 20 divisors (see below), whose sum is σ = 441819936. Its totient is φ = 85513440.

The previous prime is 199531441. The next prime is 199531477. The reversal of 199531472 is 274135991.

It is a Smith number, since the sum of its digits (41) 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 (199531477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890654 + ... + 890877.

Almost surely, 2^199531472 is an apocalyptic number.

It is an amenable number.

199531472 is an abundant number, since it is smaller than the sum of its proper divisors (242288464).

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

199531472 is a wasteful number, since it uses less digits than its factorization.

199531472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781546 (or 1781540 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 199531472 is about 14125.5609446138. The cubic root of 199531472 is about 584.3465291857.

The spelling of 199531472 in words is "one hundred ninety-nine million, five hundred thirty-one thousand, four hundred seventy-two".