1522249722 has 72 divisors (see below), whose sum is σ = 3864096288. Its totient is φ = 424261440.

The previous prime is 1522249721. The next prime is 1522249739. The reversal of 1522249722 is 2279422251.

It is a happy number.

1522249722 is a `hidden beast` number, since 1 + 522 + 24 + 97 + 22 = 666.

It is a super-2 number, since 2×1522249722² = 4634488432258154568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1522249721) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 208213 + ... + 215399.

It is an arithmetic number, because the mean of its divisors is an integer number (53668004).

Almost surely, 2^1522249722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1522249722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932048144).

1522249722 is an abundant number, since it is smaller than the sum of its proper divisors (2341846566).

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

1522249722 is a wasteful number, since it uses less digits than its factorization.

1522249722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7284 (or 7240 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1522249722 is about 39016.0187871597. The cubic root of 1522249722 is about 1150.3463914312.

The spelling of 1522249722 in words is "one billion, five hundred twenty-two million, two hundred forty-nine thousand, seven hundred twenty-two".