90026281 has 4 divisors (see below), whose sum is σ = 90403200. Its totient is φ = 89649364.

The previous prime is 90026257. The next prime is 90026297. The reversal of 90026281 is 18262009.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90026281 - 2¹⁵ = 89993513 is a prime.

It is a super-2 number, since 2×90026281² = 16209462541381922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90026221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188101 + ... + 188578.

It is an arithmetic number, because the mean of its divisors is an integer number (22600800).

Almost surely, 2^90026281 is an apocalyptic number.

It is an amenable number.

90026281 is a deficient number, since it is larger than the sum of its proper divisors (376919).

90026281 is a wasteful number, since it uses less digits than its factorization.

90026281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376918.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 90026281 is about 9488.2180097213. The cubic root of 90026281 is about 448.1840910765.

The spelling of 90026281 in words is "ninety million, twenty-six thousand, two hundred eighty-one".