1428331260 has 24 divisors (see below), whose sum is σ = 3999327696. Its totient is φ = 380888320.

The previous prime is 1428331249. The next prime is 1428331271. The reversal of 1428331260 is 621338241.

It is an interprime number because it is at equal distance from previous prime (1428331249) and next prime (1428331271).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent 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, 11902701 + ... + 11902820.

It is an arithmetic number, because the mean of its divisors is an integer number (166638654).

Almost surely, 2^1428331260 is an apocalyptic number.

1428331260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428331260 is an abundant number, since it is smaller than the sum of its proper divisors (2570996436).

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

1428331260 is a wasteful number, since it uses less digits than its factorization.

1428331260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23805533 (or 23805531 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1428331260 is about 37793.2700358146. The cubic root of 1428331260 is about 1126.1847627260.

The spelling of 1428331260 in words is "one billion, four hundred twenty-eight million, three hundred thirty-one thousand, two hundred sixty".