99972182 has 8 divisors (see below), whose sum is σ = 150034152. Its totient is φ = 49960800.

The previous prime is 99972163. The next prime is 99972221. The reversal of 99972182 is 28127999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×99972182² = 19988874347682248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7244 + ... + 15887.

It is an arithmetic number, because the mean of its divisors is an integer number (18754269).

Almost surely, 2^99972182 is an apocalyptic number.

99972182 is a deficient number, since it is larger than the sum of its proper divisors (50061970).

99972182 is a wasteful number, since it uses less digits than its factorization.

99972182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25294.

The product of its digits is 163296, while the sum is 47.

The square root of 99972182 is about 9998.6090032564. The cubic root of 99972182 is about 464.1158394637.

The spelling of 99972182 in words is "ninety-nine million, nine hundred seventy-two thousand, one hundred eighty-two".