90281398 has 8 divisors (see below), whose sum is σ = 135479880. Its totient is φ = 45121440.

The previous prime is 90281383. The next prime is 90281423. The reversal of 90281398 is 89318209.

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

It is a self number, because there is not a number n which added to its sum of digits gives 90281398.

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, 2803 + ... + 13726.

It is an arithmetic number, because the mean of its divisors is an integer number (16934985).

Almost surely, 2^90281398 is an apocalyptic number.

90281398 is a deficient number, since it is larger than the sum of its proper divisors (45198482).

90281398 is a wasteful number, since it uses less digits than its factorization.

90281398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19262.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 90281398 is about 9501.6523826122. The cubic root of 90281398 is about 448.6070473659.

The spelling of 90281398 in words is "ninety million, two hundred eighty-one thousand, three hundred ninety-eight".