1428877 has 4 divisors (see below), whose sum is σ = 1440256. Its totient is φ = 1417500.

The previous prime is 1428863. The next prime is 1428887. The reversal of 1428877 is 7788241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428877 is a prime.

It is a super-2 number, since 2×1428877² = 4083378962258, which contains 22 as substring.

It is a Duffinian number.

1428877 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5499 + ... + 5752.

It is an arithmetic number, because the mean of its divisors is an integer number (360064).

2^1428877 is an apocalyptic number.

It is an amenable number.

1428877 is a deficient number, since it is larger than the sum of its proper divisors (11379).

1428877 is a wasteful number, since it uses less digits than its factorization.

1428877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11378.

The product of its digits is 25088, while the sum is 37.

The square root of 1428877 is about 1195.3564321992. The cubic root of 1428877 is about 112.6328176193.

It can be divided in two parts, 14288 and 77, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 1428877 in words is "one million, four hundred twenty-eight thousand, eight hundred seventy-seven".