90504678 has 32 divisors (see below), whose sum is σ = 206053632. Its totient is φ = 26232800.

The previous prime is 90504677. The next prime is 90504683. The reversal of 90504678 is 87640509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90504677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28293 + ... + 31328.

It is an arithmetic number, because the mean of its divisors is an integer number (6439176).

Almost surely, 2^90504678 is an apocalyptic number.

90504678 is an abundant number, since it is smaller than the sum of its proper divisors (115548954).

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

90504678 is a wasteful number, since it uses less digits than its factorization.

90504678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59660.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 90504678 is about 9513.3946622644. The cubic root of 90504678 is about 448.9765680072.

The spelling of 90504678 in words is "ninety million, five hundred four thousand, six hundred seventy-eight".