90812182 has 4 divisors (see below), whose sum is σ = 136218276. Its totient is φ = 45406090.

The previous prime is 90812149. The next prime is 90812201. The reversal of 90812182 is 28121809.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28121809 = 5303².

It is a super-2 number, since 2×90812182² = 16493704799202248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22703044 + ... + 22703047.

It is an arithmetic number, because the mean of its divisors is an integer number (34054569).

Almost surely, 2^90812182 is an apocalyptic number.

90812182 is a deficient number, since it is larger than the sum of its proper divisors (45406094).

90812182 is a wasteful number, since it uses less digits than its factorization.

90812182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45406093.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 90812182 is about 9529.5425913314. The cubic root of 90812182 is about 449.4844829035.

The spelling of 90812182 in words is "ninety million, eight hundred twelve thousand, one hundred eighty-two".