20422370 has 8 divisors (see below), whose sum is σ = 36760284. Its totient is φ = 8168944.

The previous prime is 20422357. The next prime is 20422421. The reversal of 20422370 is 7322402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18498601 + 1923769 = 4301^2 + 1387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021109 + ... + 1021128.

Almost surely, 2^20422370 is an apocalyptic number.

20422370 is a deficient number, since it is larger than the sum of its proper divisors (16337914).

20422370 is a wasteful number, since it uses less digits than its factorization.

20422370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042244.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20422370 is about 4519.1116383643. Note that the first 3 decimals coincide. The cubic root of 20422370 is about 273.3392803915.

Adding to 20422370 its reverse (7322402), we get a palindrome (27744772).

The spelling of 20422370 in words is "twenty million, four hundred twenty-two thousand, three hundred seventy".