1428672144 has 40 divisors (see below), whose sum is σ = 3732216480. Its totient is φ = 470871808.

The previous prime is 1428672067. The next prime is 1428672151. The reversal of 1428672144 is 4412768241.

It is a super-2 number, since 2×1428672144² = 4082208190083113472, which contains 22 as substring.

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, 162942 + ... + 171485.

It is an arithmetic number, because the mean of its divisors is an integer number (93305412).

Almost surely, 2^1428672144 is an apocalyptic number.

It is an amenable number.

1428672144 is an abundant number, since it is smaller than the sum of its proper divisors (2303544336).

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

1428672144 is a wasteful number, since it uses less digits than its factorization.

1428672144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334527 (or 334521 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 1428672144 is about 37797.7796173267. The cubic root of 1428672144 is about 1126.2743469472.

The spelling of 1428672144 in words is "one billion, four hundred twenty-eight million, six hundred seventy-two thousand, one hundred forty-four".