1428375408 has 40 divisors (see below), whose sum is σ = 3691394688. Its totient is φ = 475941312.

The previous prime is 1428375401. The next prime is 1428375409. The reversal of 1428375408 is 8045738241.

It is a self number, because there is not a number n which added to its sum of digits gives 1428375408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428375401) 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, 185491 + ... + 193037.

Almost surely, 2^1428375408 is an apocalyptic number.

It is an amenable number.

1428375408 is an abundant number, since it is smaller than the sum of its proper divisors (2263019280).

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

1428375408 is a wasteful number, since it uses less digits than its factorization.

1428375408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11501 (or 11495 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 1428375408 is about 37793.8541035444. The cubic root of 1428375408 is about 1126.1963656116.

The spelling of 1428375408 in words is "one billion, four hundred twenty-eight million, three hundred seventy-five thousand, four hundred eight".