90506436 has 24 divisors (see below), whose sum is σ = 223604640. Its totient is φ = 28394112.

The previous prime is 90506407. The next prime is 90506441. The reversal of 90506436 is 63460509.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 90506397 and 90506406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221626 + ... + 222033.

It is an arithmetic number, because the mean of its divisors is an integer number (9316860).

Almost surely, 2^90506436 is an apocalyptic number.

It is an amenable number.

90506436 is an abundant number, since it is smaller than the sum of its proper divisors (133098204).

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

90506436 is a wasteful number, since it uses less digits than its factorization.

90506436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443683 (or 443681 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 90506436 is about 9513.4870578563. The cubic root of 90506436 is about 448.9794750234.

The spelling of 90506436 in words is "ninety million, five hundred six thousand, four hundred thirty-six".