1572216 has 32 divisors (see below), whose sum is σ = 3973200. Its totient is φ = 518400.

The previous prime is 1572203. The next prime is 1572217. The reversal of 1572216 is 6122751.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572217) 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, 2316 + ... + 2916.

2^1572216 is an apocalyptic number.

It is an amenable number.

1572216 is an abundant number, since it is smaller than the sum of its proper divisors (2400984).

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

1572216 is a wasteful number, since it uses less digits than its factorization.

1572216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 715 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 1572216 is about 1253.8803770695. The cubic root of 1572216 is about 116.2797449610.

Adding to 1572216 its reverse (6122751), we get a palindrome (7694967).

The spelling of 1572216 in words is "one million, five hundred seventy-two thousand, two hundred sixteen".