8001428 has 12 divisors (see below), whose sum is σ = 14026740. Its totient is φ = 3993792.

The previous prime is 8001359. The next prime is 8001491. The reversal of 8001428 is 8241008.

It can be written as a sum of positive squares in 2 ways, for example, as 7772944 + 228484 = 2788^2 + 478^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1568 + ... + 4296.

It is an arithmetic number, because the mean of its divisors is an integer number (1168895).

Almost surely, 2^8001428 is an apocalyptic number.

It is an amenable number.

8001428 is a deficient number, since it is larger than the sum of its proper divisors (6025312).

8001428 is a wasteful number, since it uses less digits than its factorization.

8001428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466 (or 3464 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 8001428 is about 2828.6795506031. The cubic root of 8001428 is about 200.0118992920.

The spelling of 8001428 in words is "eight million, one thousand, four hundred twenty-eight".