90873140 has 12 divisors (see below), whose sum is σ = 190833636. Its totient is φ = 36349248.

The previous prime is 90873127. The next prime is 90873149. The reversal of 90873140 is 4137809.

It can be written as a sum of positive squares in 2 ways, for example, as 51208336 + 39664804 = 7156^2 + 6298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90873097 and 90873106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90873149) 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, 2271809 + ... + 2271848.

It is an arithmetic number, because the mean of its divisors is an integer number (15902803).

Almost surely, 2^90873140 is an apocalyptic number.

It is an amenable number.

90873140 is an abundant number, since it is smaller than the sum of its proper divisors (99960496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90873140 is a wasteful number, since it uses less digits than its factorization.

90873140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543666 (or 4543664 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 90873140 is about 9532.7404244530. The cubic root of 90873140 is about 449.5850330943.

The spelling of 90873140 in words is "ninety million, eight hundred seventy-three thousand, one hundred forty".