22772070 has 128 divisors (see below), whose sum is σ = 67046400. Its totient is φ = 5474304.

The previous prime is 22772059. The next prime is 22772081. The reversal of 22772070 is 7027722.

It is an interprime number because it is at equal distance from previous prime (22772059) and next prime (22772081).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117894 + ... + 118086.

It is an arithmetic number, because the mean of its divisors is an integer number (523800).

Almost surely, 2^22772070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22772070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33523200).

22772070 is an abundant number, since it is smaller than the sum of its proper divisors (44274330).

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

22772070 is a wasteful number, since it uses less digits than its factorization.

22772070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 22772070 is about 4772.0090108884. The cubic root of 22772070 is about 283.4441534966. Note that the first 3 decimals are identical.

Adding to 22772070 its reverse (7027722), we get a palindrome (29799792).

The spelling of 22772070 in words is "twenty-two million, seven hundred seventy-two thousand, seventy".