198157432 has 32 divisors (see below), whose sum is σ = 409892400. Its totient is φ = 89056000.

The previous prime is 198157429. The next prime is 198157433. The reversal of 198157432 is 234751891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198157433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4819 + ... + 20482.

Almost surely, 2^198157432 is an apocalyptic number.

It is an amenable number.

198157432 is an abundant number, since it is smaller than the sum of its proper divisors (211734968).

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

198157432 is a wasteful number, since it uses less digits than its factorization.

198157432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25407 (or 25403 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 198157432 is about 14076.8402704584. The cubic root of 198157432 is about 583.0021036204.

The spelling of 198157432 in words is "one hundred ninety-eight million, one hundred fifty-seven thousand, four hundred thirty-two".