90336540 has 48 divisors (see below), whose sum is σ = 289078272. Its totient is φ = 20648256.

The previous prime is 90336529. The next prime is 90336541. The reversal of 90336540 is 4563309.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 90336498 and 90336507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90336541) 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, 107124 + ... + 107963.

It is an arithmetic number, because the mean of its divisors is an integer number (6022464).

Almost surely, 2^90336540 is an apocalyptic number.

It is an amenable number.

90336540 is an abundant number, since it is smaller than the sum of its proper divisors (198741732).

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

90336540 is a wasteful number, since it uses less digits than its factorization.

90336540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215106 (or 215104 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 90336540 is about 9504.5536454901. The cubic root of 90336540 is about 448.6983620618.

Adding to 90336540 its reverse (4563309), we get a palindrome (94899849).

The spelling of 90336540 in words is "ninety million, three hundred thirty-six thousand, five hundred forty".