1279432 has 64 divisors (see below), whose sum is σ = 3133440. Its totient is φ = 475200.

The previous prime is 1279427. The next prime is 1279457. The reversal of 1279432 is 2349721.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1279432.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19063 + ... + 19129.

It is an arithmetic number, because the mean of its divisors is an integer number (48960).

2^1279432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1279432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566720).

1279432 is an abundant number, since it is smaller than the sum of its proper divisors (1854008).

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

1279432 is a wasteful number, since it uses less digits than its factorization.

1279432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 118 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 1279432 is about 1131.1197991371. The cubic root of 1279432 is about 108.5606419834.

It can be divided in two parts, 1279 and 432, that added together give a triangular number (1711 = T₅₈).

The spelling of 1279432 in words is "one million, two hundred seventy-nine thousand, four hundred thirty-two".