90278851 has 16 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 79644960.

The previous prime is 90278849. The next prime is 90278873. The reversal of 90278851 is 15887209.

It is a cyclic number.

It is not a de Polignac number, because 90278851 - 2¹ = 90278849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90278831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32100 + ... + 34798.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^90278851 is an apocalyptic number.

90278851 is a deficient number, since it is larger than the sum of its proper divisors (11327549).

90278851 is a wasteful number, since it uses less digits than its factorization.

90278851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 90278851 is about 9501.5183523477. The cubic root of 90278851 is about 448.6028286567.

The spelling of 90278851 in words is "ninety million, two hundred seventy-eight thousand, eight hundred fifty-one".