90278671 has 16 divisors (see below), whose sum is σ = 109154560. Its totient is φ = 72938880.

The previous prime is 90278659. The next prime is 90278677. The reversal of 90278671 is 17687209.

It is not a de Polignac number, because 90278671 - 2²³ = 81890063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90278677) 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, 26455 + ... + 29671.

It is an arithmetic number, because the mean of its divisors is an integer number (6822160).

Almost surely, 2^90278671 is an apocalyptic number.

90278671 is a deficient number, since it is larger than the sum of its proper divisors (18875889).

90278671 is a wasteful number, since it uses less digits than its factorization.

90278671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3454.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 90278671 is about 9501.5088801727. The cubic root of 90278671 is about 448.6025305117.

The spelling of 90278671 in words is "ninety million, two hundred seventy-eight thousand, six hundred seventy-one".