428309286 has 32 divisors (see below), whose sum is σ = 910656000. Its totient is φ = 133912800.

The previous prime is 428309279. The next prime is 428309309. The reversal of 428309286 is 682903824.

It is a super-3 number, since 3×428309286³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7086 + ... + 30113.

It is an arithmetic number, because the mean of its divisors is an integer number (28458000).

Almost surely, 2^428309286 is an apocalyptic number.

428309286 is an abundant number, since it is smaller than the sum of its proper divisors (482346714).

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

428309286 is a wasteful number, since it uses less digits than its factorization.

428309286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37324.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 428309286 is about 20695.6344672010. The cubic root of 428309286 is about 753.7936884380.

The spelling of 428309286 in words is "four hundred twenty-eight million, three hundred nine thousand, two hundred eighty-six".