1428665950 has 12 divisors (see below), whose sum is σ = 2657318760. Its totient is φ = 571466360.

The previous prime is 1428665939. The next prime is 1428665963. The reversal of 1428665950 is 595668241.

It is a self number, because there is not a number n which added to its sum of digits gives 1428665950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14286610 + ... + 14286709.

It is an arithmetic number, because the mean of its divisors is an integer number (221443230).

Almost surely, 2^1428665950 is an apocalyptic number.

1428665950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1428665950 is a deficient number, since it is larger than the sum of its proper divisors (1228652810).

1428665950 is a wasteful number, since it uses less digits than its factorization.

1428665950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28573331 (or 28573326 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 1428665950 is about 37797.6976812080. The cubic root of 1428665950 is about 1126.2727192928.

The spelling of 1428665950 in words is "one billion, four hundred twenty-eight million, six hundred sixty-five thousand, nine hundred fifty".