22720070 has 16 divisors (see below), whose sum is σ = 40975200. Its totient is φ = 9070464.

The previous prime is 22720037. The next prime is 22720073. The reversal of 22720070 is 7002722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22720073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4094 + ... + 7886.

It is an arithmetic number, because the mean of its divisors is an integer number (2560950).

Almost surely, 2^22720070 is an apocalyptic number.

22720070 is a deficient number, since it is larger than the sum of its proper divisors (18255130).

22720070 is a wasteful number, since it uses less digits than its factorization.

22720070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 22720070 is about 4766.5574579564. The cubic root of 22720070 is about 283.2282409169.

Adding to 22720070 its reverse (7002722), we get a palindrome (29722792).

The spelling of 22720070 in words is "twenty-two million, seven hundred twenty thousand, seventy".