20070522 has 12 divisors (see below), whose sum is σ = 43486170. Its totient is φ = 6690168.

The previous prime is 20070509. The next prime is 20070529. The reversal of 20070522 is 22507002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16232841 + 3837681 = 4029^2 + 1959^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1115029 = 20070522 / (2 + 0 + 0 + 7 + 0 + 5 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20070495 and 20070504.

It is not an unprimeable number, because it can be changed into a prime (20070529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 557497 + ... + 557532.

Almost surely, 2^20070522 is an apocalyptic number.

20070522 is an abundant number, since it is smaller than the sum of its proper divisors (23415648).

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

20070522 is a wasteful number, since it uses less digits than its factorization.

20070522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115037 (or 1115034 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 20070522 is about 4480.0136160507. The cubic root of 20070522 is about 271.7604309977.

Adding to 20070522 its reverse (22507002), we get a palindrome (42577524).

It can be divided in two parts, 2007052 and 2, that multiplied together give a palindrome (4014104).

The spelling of 20070522 in words is "twenty million, seventy thousand, five hundred twenty-two".