90273631 has 12 divisors (see below), whose sum is σ = 105310920. Its totient is φ = 77157360.

The previous prime is 90273613. The next prime is 90273637. The reversal of 90273631 is 13637209.

It is not a de Polignac number, because 90273631 - 2⁹ = 90273119 is a prime.

It is a super-2 number, since 2×90273631² = 16298656907848322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90273593 and 90273602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90273637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16141 + ... + 21001.

It is an arithmetic number, because the mean of its divisors is an integer number (8775910).

Almost surely, 2^90273631 is an apocalyptic number.

90273631 is a deficient number, since it is larger than the sum of its proper divisors (15037289).

90273631 is a wasteful number, since it uses less digits than its factorization.

90273631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5254 (or 5247 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 90273631 is about 9501.2436554380. The cubic root of 90273631 is about 448.5941822909.

The spelling of 90273631 in words is "ninety million, two hundred seventy-three thousand, six hundred thirty-one".