1272432 has 60 divisors (see below), whose sum is σ = 3830856. Its totient is φ = 362880.

The previous prime is 1272421. The next prime is 1272443. The reversal of 1272432 is 2342721.

It is an interprime number because it is at equal distance from previous prime (1272421) and next prime (1272443).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1272399 and 1272408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2082 + ... + 2622.

2^1272432 is an apocalyptic number.

1272432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1915428).

1272432 is an abundant number, since it is smaller than the sum of its proper divisors (2558424).

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

1272432 is a wasteful number, since it uses less digits than its factorization.

1272432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 553 counting only the distinct ones).

The product of its digits is 672, while the sum is 21.

The square root of 1272432 is about 1128.0212763951. The cubic root of 1272432 is about 108.3622949524.

The spelling of 1272432 in words is "one million, two hundred seventy-two thousand, four hundred thirty-two".