90136330 has 16 divisors (see below), whose sum is σ = 163822464. Its totient is φ = 35704080.

The previous prime is 90136309. The next prime is 90136331. The reversal of 90136330 is 3363109.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 90136295 and 90136304.

It is not an unprimeable number, because it can be changed into a prime (90136331) 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, 42726 + ... + 44785.

It is an arithmetic number, because the mean of its divisors is an integer number (10238904).

Almost surely, 2^90136330 is an apocalyptic number.

90136330 is a deficient number, since it is larger than the sum of its proper divisors (73686134).

90136330 is a wasteful number, since it uses less digits than its factorization.

90136330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87621.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 90136330 is about 9494.0154834506. The cubic root of 90136330 is about 448.3666382424.

Adding to 90136330 its reverse (3363109), we get a palindrome (93499439).

The spelling of 90136330 in words is "ninety million, one hundred thirty-six thousand, three hundred thirty".