90578046 has 32 divisors (see below), whose sum is σ = 198299808. Its totient is φ = 27411840.

The previous prime is 90578041. The next prime is 90578053. The reversal of 90578046 is 64087509.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 90577995 and 90578013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90578041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4761 + ... + 14276.

It is an arithmetic number, because the mean of its divisors is an integer number (6196869).

Almost surely, 2^90578046 is an apocalyptic number.

90578046 is an abundant number, since it is smaller than the sum of its proper divisors (107721762).

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

90578046 is a wasteful number, since it uses less digits than its factorization.

90578046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19116.

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

The square root of 90578046 is about 9517.2499179122. The cubic root of 90578046 is about 449.0978568232.

The spelling of 90578046 in words is "ninety million, five hundred seventy-eight thousand, forty-six".