90280434 has 16 divisors (see below), whose sum is σ = 180655200. Its totient is φ = 30077760.

The previous prime is 90280409. The next prime is 90280459. The reversal of 90280434 is 43408209.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90280409) and next prime (90280459).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17514 + ... + 22074.

It is an arithmetic number, because the mean of its divisors is an integer number (11290950).

Almost surely, 2^90280434 is an apocalyptic number.

90280434 is an abundant number, since it is smaller than the sum of its proper divisors (90374766).

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

90280434 is a wasteful number, since it uses less digits than its factorization.

90280434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7865.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 90280434 is about 9501.6016544581. The cubic root of 90280434 is about 448.6054506592.

The spelling of 90280434 in words is "ninety million, two hundred eighty thousand, four hundred thirty-four".