22420801 has 4 divisors (see below), whose sum is σ = 24145492. Its totient is φ = 20696112.

The previous prime is 22420789. The next prime is 22420819. The reversal of 22420801 is 10802422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10802422 = 2 ⋅5401211.

It can be written as a sum of positive squares in 2 ways, for example, as 3236401 + 19184400 = 1799^2 + 4380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22420801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22420831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862326 + ... + 862351.

It is an arithmetic number, because the mean of its divisors is an integer number (6036373).

Almost surely, 2^22420801 is an apocalyptic number.

It is an amenable number.

22420801 is a deficient number, since it is larger than the sum of its proper divisors (1724691).

22420801 is a wasteful number, since it uses less digits than its factorization.

22420801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724690.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 22420801 is about 4735.0608232630. The cubic root of 22420801 is about 281.9791787521.

It can be divided in two parts, 224 and 20801, that added together give a square (21025 = 145²).

The spelling of 22420801 in words is "twenty-two million, four hundred twenty thousand, eight hundred one".