90793540 has 24 divisors (see below), whose sum is σ = 190955520. Its totient is φ = 36262368.

The previous prime is 90793517. The next prime is 90793543. The reversal of 90793540 is 4539709.

It is a self number, because there is not a number n which added to its sum of digits gives 90793540.

It is not an unprimeable number, because it can be changed into a prime (90793543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11709 + ... + 17851.

It is an arithmetic number, because the mean of its divisors is an integer number (7956480).

Almost surely, 2^90793540 is an apocalyptic number.

It is an amenable number.

90793540 is an abundant number, since it is smaller than the sum of its proper divisors (100161980).

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

90793540 is a wasteful number, since it uses less digits than its factorization.

90793540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891 (or 6889 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 90793540 is about 9528.5644249278. The cubic root of 90793540 is about 449.4537239496.

The spelling of 90793540 in words is "ninety million, seven hundred ninety-three thousand, five hundred forty".