22420038 has 32 divisors (see below), whose sum is σ = 47491200. Its totient is φ = 7036416.

The previous prime is 22420033. The next prime is 22420063. The reversal of 22420038 is 83002422.

Added to its reverse (83002422) it gives a triangular number (105422460 = T₁₄₅₂₀).

It is a junction number, because it is equal to n+sod(n) for n = 22419996 and 22420023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420033) 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 15 ways as a sum of consecutive naturals, for example, 21493 + ... + 22511.

It is an arithmetic number, because the mean of its divisors is an integer number (1484100).

Almost surely, 2^22420038 is an apocalyptic number.

22420038 is an abundant number, since it is smaller than the sum of its proper divisors (25071162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22420038 is a wasteful number, since it uses less digits than its factorization.

22420038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 22420038 is about 4734.9802533907. The cubic root of 22420038 is about 281.9759800476.

Adding to 22420038 its reverse (83002422), we get a triangular number (105422460 = T₁₄₅₂₀).

The spelling of 22420038 in words is "twenty-two million, four hundred twenty thousand, thirty-eight".