1428516 has 30 divisors (see below), whose sum is σ = 3735270. Its totient is φ = 476064.

The previous prime is 1428491. The next prime is 1428521. The reversal of 1428516 is 6158241.

1428516 is a `hidden beast` number, since 142 + 8 + 516 = 666.

It can be written as a sum of positive squares in only one way, i.e., 910116 + 518400 = 954^2 + 720^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428516.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1881 + ... + 2528.

It is an arithmetic number, because the mean of its divisors is an integer number (124509).

2^1428516 is an apocalyptic number.

It is an amenable number.

1428516 is an abundant number, since it is smaller than the sum of its proper divisors (2306754).

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

1428516 is a wasteful number, since it uses less digits than its factorization.

1428516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425 (or 4414 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1428516 is about 1195.2054216745. The cubic root of 1428516 is about 112.6233314116.

The spelling of 1428516 in words is "one million, four hundred twenty-eight thousand, five hundred sixteen".