90142818 has 16 divisors (see below), whose sum is σ = 180475776. Its totient is φ = 30015920.

The previous prime is 90142799. The next prime is 90142831. The reversal of 90142818 is 81824109.

It is a super-2 number, since 2×90142818² = 16251455273962248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338 + ... + 13493.

It is an arithmetic number, because the mean of its divisors is an integer number (11279736).

Almost surely, 2^90142818 is an apocalyptic number.

90142818 is an abundant number, since it is smaller than the sum of its proper divisors (90332958).

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

90142818 is a wasteful number, since it uses less digits than its factorization.

90142818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 90142818 is about 9494.3571662330. The cubic root of 90142818 is about 448.3773957729.

The spelling of 90142818 in words is "ninety million, one hundred forty-two thousand, eight hundred eighteen".