20220407 has 2 divisors, whose sum is σ = 20220408. Its totient is φ = 20220406.

The previous prime is 20220383. The next prime is 20220451. The reversal of 20220407 is 70402202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20220407 - 2¹⁰ = 20219383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110203 + 10110204.

It is an arithmetic number, because the mean of its divisors is an integer number (10110204).

Almost surely, 2^20220407 is an apocalyptic number.

20220407 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220407 is an equidigital number, since it uses as much as digits as its factorization.

20220407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 20220407 is about 4496.7106867131. The cubic root of 20220407 is about 272.4352487623.

Adding to 20220407 its reverse (70402202), we get a palindrome (90622609).

It can be divided in two parts, 202 and 20407, that multiplied together give a palindrome (4122214).

The spelling of 20220407 in words is "twenty million, two hundred twenty thousand, four hundred seven".