428801290 has 8 divisors (see below), whose sum is σ = 771842340. Its totient is φ = 171520512.

The previous prime is 428801237. The next prime is 428801299. The reversal of 428801290 is 92108824.

It can be written as a sum of positive squares in 2 ways, for example, as 425308129 + 3493161 = 20623^2 + 1869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (428801299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21440055 + ... + 21440074.

Almost surely, 2^428801290 is an apocalyptic number.

428801290 is a deficient number, since it is larger than the sum of its proper divisors (343041050).

428801290 is a wasteful number, since it uses less digits than its factorization.

428801290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42880136.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 428801290 is about 20707.5177170032. The cubic root of 428801290 is about 754.0822085994.

The spelling of 428801290 in words is "four hundred twenty-eight million, eight hundred one thousand, two hundred ninety".