1572273822 has 64 divisors (see below), whose sum is σ = 3723148800. Its totient is φ = 433297920.

The previous prime is 1572273809. The next prime is 1572273827. The reversal of 1572273822 is 2283722751.

It is a super-4 number, since 4×1572273822⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572273827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148129 + ... + 158387.

It is an arithmetic number, because the mean of its divisors is an integer number (58174200).

Almost surely, 2^1572273822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1572273822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1861574400).

1572273822 is an abundant number, since it is smaller than the sum of its proper divisors (2150874978).

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

1572273822 is a wasteful number, since it uses less digits than its factorization.

1572273822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10401.

The product of its digits is 94080, while the sum is 39.

The square root of 1572273822 is about 39651.9081760260. The cubic root of 1572273822 is about 1162.8117043205.

Subtracting 1572273822 from its reverse (2283722751), we obtain a square (711448929 = 26673²).

The spelling of 1572273822 in words is "one billion, five hundred seventy-two million, two hundred seventy-three thousand, eight hundred twenty-two".