1428415 has 8 divisors (see below), whose sum is σ = 1788768. Its totient is φ = 1092960.

The previous prime is 1428409. The next prime is 1428419. The reversal of 1428415 is 5148241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1428415 - 2¹¹ = 1426367 is a prime.

It is a Duffinian number.

1428415 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6096 + ... + 6325.

It is an arithmetic number, because the mean of its divisors is an integer number (223596).

2^1428415 is an apocalyptic number.

1428415 is a deficient number, since it is larger than the sum of its proper divisors (360353).

1428415 is a wasteful number, since it uses less digits than its factorization.

1428415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12449.

The product of its digits is 1280, while the sum is 25.

The square root of 1428415 is about 1195.1631687765. The cubic root of 1428415 is about 112.6206770895.

The spelling of 1428415 in words is "one million, four hundred twenty-eight thousand, four hundred fifteen".