1428245672 has 16 divisors (see below), whose sum is σ = 3060526560. Its totient is φ = 612105264.

The previous prime is 1428245669. The next prime is 1428245717. The reversal of 1428245672 is 2765428241.

It is a happy 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, 12752138 + ... + 12752249.

It is an arithmetic number, because the mean of its divisors is an integer number (191282910).

Almost surely, 2^1428245672 is an apocalyptic number.

It is an amenable number.

1428245672 is an abundant number, since it is smaller than the sum of its proper divisors (1632280888).

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

1428245672 is a wasteful number, since it uses less digits than its factorization.

1428245672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25504400 (or 25504396 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The square root of 1428245672 is about 37792.1377008499. The cubic root of 1428245672 is about 1126.1622679847.

The spelling of 1428245672 in words is "one billion, four hundred twenty-eight million, two hundred forty-five thousand, six hundred seventy-two".