428294090 has 32 divisors (see below), whose sum is σ = 932891904. Its totient is φ = 138205440.

The previous prime is 428294089. The next prime is 428294117. The reversal of 428294090 is 90492824.

It is a Curzon 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, 178766 + ... + 181145.

It is an arithmetic number, because the mean of its divisors is an integer number (29152872).

Almost surely, 2^428294090 is an apocalyptic number.

428294090 is an abundant number, since it is smaller than the sum of its proper divisors (504597814).

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

428294090 is a wasteful number, since it uses less digits than its factorization.

428294090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359942.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 428294090 is about 20695.2673333784. The cubic root of 428294090 is about 753.7847737084.

The spelling of 428294090 in words is "four hundred twenty-eight million, two hundred ninety-four thousand, ninety".