22520070 has 96 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 5498880.

The previous prime is 22520063. The next prime is 22520077. The reversal of 22520070 is 7002522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22520063) and next prime (22520077).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62551 + ... + 62909.

It is an arithmetic number, because the mean of its divisors is an integer number (663390).

Almost surely, 2^22520070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22520070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31842720).

22520070 is an abundant number, since it is smaller than the sum of its proper divisors (41165370).

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

22520070 is a wasteful number, since it uses less digits than its factorization.

22520070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 427 counting only the distinct ones).

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

The square root of 22520070 is about 4745.5315824468. The cubic root of 22520070 is about 282.3947241322.

Adding to 22520070 its reverse (7002522), we get a palindrome (29522592).

The spelling of 22520070 in words is "twenty-two million, five hundred twenty thousand, seventy".