20122445 has 16 divisors (see below), whose sum is σ = 28011648. Its totient is φ = 13590720.

The previous prime is 20122429. The next prime is 20122469. The reversal of 20122445 is 54422102.

It is a happy number.

It is not a de Polignac number, because 20122445 - 2⁴ = 20122429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1946 + ... + 6635.

It is an arithmetic number, because the mean of its divisors is an integer number (1750728).

Almost surely, 2^20122445 is an apocalyptic number.

It is an amenable number.

20122445 is a deficient number, since it is larger than the sum of its proper divisors (7889203).

20122445 is an equidigital number, since it uses as much as digits as its factorization.

20122445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20122445 is about 4485.8048330261. The cubic root of 20122445 is about 271.9945798012.

Adding to 20122445 its reverse (54422102), we get a palindrome (74544547).

The spelling of 20122445 in words is "twenty million, one hundred twenty-two thousand, four hundred forty-five".