1428857292 has 24 divisors (see below), whose sum is σ = 3346980336. Its totient is φ = 474431488.

The previous prime is 1428857291. The next prime is 1428857317. The reversal of 1428857292 is 2927588241.

It is not an unprimeable number, because it can be changed into a prime (1428857291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228573 + ... + 234740.

It is an arithmetic number, because the mean of its divisors is an integer number (139457514).

Almost surely, 2^1428857292 is an apocalyptic number.

1428857292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1428857292 is an abundant number, since it is smaller than the sum of its proper divisors (1918123044).

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

1428857292 is a wasteful number, since it uses less digits than its factorization.

1428857292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463577 (or 463575 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 1428857292 is about 37800.2287294667. The cubic root of 1428857292 is about 1126.3229978188.

The spelling of 1428857292 in words is "one billion, four hundred twenty-eight million, eight hundred fifty-seven thousand, two hundred ninety-two".