90578106 has 24 divisors (see below), whose sum is σ = 196596660. Its totient is φ = 30139776.

The previous prime is 90578101. The next prime is 90578123. The reversal of 90578106 is 60187509.

It can be written as a sum of positive squares in 2 ways, for example, as 59675625 + 30902481 = 7725^2 + 5559^2 .

It is not an unprimeable number, because it can be changed into a prime (90578101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6930 + ... + 15138.

Almost surely, 2^90578106 is an apocalyptic number.

90578106 is an abundant number, since it is smaller than the sum of its proper divisors (106018554).

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

90578106 is a wasteful number, since it uses less digits than its factorization.

90578106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830 (or 8827 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 90578106 is about 9517.2530700828. The cubic root of 90578106 is about 449.0979559858.

The spelling of 90578106 in words is "ninety million, five hundred seventy-eight thousand, one hundred six".