1428969276 has 72 divisors (see below), whose sum is σ = 4281047680. Its totient is φ = 408274992.

The previous prime is 1428969263. The next prime is 1428969281. The reversal of 1428969276 is 6729698241.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98206 + ... + 111813.

Almost surely, 2^1428969276 is an apocalyptic number.

It is an amenable number.

1428969276 is an abundant number, since it is smaller than the sum of its proper divisors (2852078404).

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

1428969276 is a wasteful number, since it uses less digits than its factorization.

1428969276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210045 (or 210031 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 1428969276 is about 37801.7099613232. The cubic root of 1428969276 is about 1126.3524215316.

The spelling of 1428969276 in words is "one billion, four hundred twenty-eight million, nine hundred sixty-nine thousand, two hundred seventy-six".