1428894120 has 64 divisors (see below), whose sum is σ = 4402552320. Its totient is φ = 370738944.

The previous prime is 1428894091. The next prime is 1428894121. The reversal of 1428894120 is 214988241.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1428894121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156472 + ... + 165351.

It is an arithmetic number, because the mean of its divisors is an integer number (68789880).

Almost surely, 2^1428894120 is an apocalyptic number.

1428894120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428894120 is an abundant number, since it is smaller than the sum of its proper divisors (2973658200).

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

1428894120 is a wasteful number, since it uses less digits than its factorization.

1428894120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321874 (or 321870 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 1428894120 is about 37800.7158662372. The cubic root of 1428894120 is about 1126.3326745181.

The spelling of 1428894120 in words is "one billion, four hundred twenty-eight million, eight hundred ninety-four thousand, one hundred twenty".