193672990 has 24 divisors (see below), whose sum is σ = 405528552. Its totient is φ = 66402000.

The previous prime is 193672979. The next prime is 193673017. The reversal of 193672990 is 99276391.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 193672990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197136 + ... + 198115.

It is an arithmetic number, because the mean of its divisors is an integer number (16897023).

Almost surely, 2^193672990 is an apocalyptic number.

193672990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

193672990 is an abundant number, since it is smaller than the sum of its proper divisors (211855562).

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

193672990 is a wasteful number, since it uses less digits than its factorization.

193672990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395272 (or 395265 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 193672990 is about 13916.6443512795. The cubic root of 193672990 is about 578.5705883092.

The spelling of 193672990 in words is "one hundred ninety-three million, six hundred seventy-two thousand, nine hundred ninety".