1428342380 has 24 divisors (see below), whose sum is σ = 3175962048. Its totient is φ = 537728768.

The previous prime is 1428342353. The next prime is 1428342401. The reversal of 1428342380 is 832438241.

It is a self number, because there is not a number n which added to its sum of digits gives 1428342380.

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, 2100164 + ... + 2100843.

It is an arithmetic number, because the mean of its divisors is an integer number (132331752).

Almost surely, 2^1428342380 is an apocalyptic number.

1428342380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428342380 is an abundant number, since it is smaller than the sum of its proper divisors (1747619668).

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

1428342380 is a wasteful number, since it uses less digits than its factorization.

1428342380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201033 (or 4201031 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 1428342380 is about 37793.4171516681. The cubic root of 1428342380 is about 1126.1876852838.

The spelling of 1428342380 in words is "one billion, four hundred twenty-eight million, three hundred forty-two thousand, three hundred eighty".