1428608465 has 8 divisors (see below), whose sum is σ = 1715371008. Its totient is φ = 1142192880.

The previous prime is 1428608351. The next prime is 1428608473. The reversal of 1428608465 is 5648068241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1428608465 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77591 + ... + 94220.

It is an arithmetic number, because the mean of its divisors is an integer number (214421376).

Almost surely, 2^1428608465 is an apocalyptic number.

It is an amenable number.

1428608465 is a deficient number, since it is larger than the sum of its proper divisors (286762543).

1428608465 is a wasteful number, since it uses less digits than its factorization.

1428608465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173479.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 1428608465 is about 37796.9372436445. The cubic root of 1428608465 is about 1126.2576132060.

The spelling of 1428608465 in words is "one billion, four hundred twenty-eight million, six hundred eight thousand, four hundred sixty-five".