428325590 has 32 divisors (see below), whose sum is σ = 961231104. Its totient is φ = 133503840.

The previous prime is 428325587. The next prime is 428325641. The reversal of 428325590 is 95523824.

It is a super-2 number, since 2×428325590² = 366925622097696200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 277364 + ... + 278903.

It is an arithmetic number, because the mean of its divisors is an integer number (30038472).

Almost surely, 2^428325590 is an apocalyptic number.

428325590 is an abundant number, since it is smaller than the sum of its proper divisors (532905514).

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

428325590 is a wasteful number, since it uses less digits than its factorization.

428325590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556292.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 428325590 is about 20696.0283629493. The cubic root of 428325590 is about 753.8032529410.

The spelling of 428325590 in words is "four hundred twenty-eight million, three hundred twenty-five thousand, five hundred ninety".