90884478 has 8 divisors (see below), whose sum is σ = 181768968. Its totient is φ = 30294824.

The previous prime is 90884459. The next prime is 90884483. The reversal of 90884478 is 87448809.

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

90884478 is an admirable number.

It is a Curzon number.

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, 7573701 + ... + 7573712.

It is an arithmetic number, because the mean of its divisors is an integer number (22721121).

Almost surely, 2^90884478 is an apocalyptic number.

90884478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90884478 is a wasteful number, since it uses less digits than its factorization.

90884478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15147418.

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 90884478 is about 9533.3350932399. The cubic root of 90884478 is about 449.6037301597.

The spelling of 90884478 in words is "ninety million, eight hundred eighty-four thousand, four hundred seventy-eight".