22420455 has 8 divisors (see below), whose sum is σ = 35872752. Its totient is φ = 11957568.

The previous prime is 22420441. The next prime is 22420493. The reversal of 22420455 is 55402422.

It is a happy number.

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

It is not a de Polignac number, because 22420455 - 2⁴ = 22420439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747334 + ... + 747363.

It is an arithmetic number, because the mean of its divisors is an integer number (4484094).

Almost surely, 2^22420455 is an apocalyptic number.

22420455 is a deficient number, since it is larger than the sum of its proper divisors (13452297).

22420455 is a wasteful number, since it uses less digits than its factorization.

22420455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494705.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 22420455 is about 4735.0242871605. The cubic root of 22420455 is about 281.9777282345.

Adding to 22420455 its reverse (55402422), we get a palindrome (77822877).

The spelling of 22420455 in words is "twenty-two million, four hundred twenty thousand, four hundred fifty-five".