22420643 has 16 divisors (see below), whose sum is σ = 26320896. Its totient is φ = 18701280.

The previous prime is 22420633. The next prime is 22420667. The reversal of 22420643 is 34602422.

It is a cyclic number.

It is not a de Polignac number, because 22420643 - 2⁶ = 22420579 is a prime.

It is a super-3 number, since 3×22420643³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22420633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82598 + ... + 82868.

It is an arithmetic number, because the mean of its divisors is an integer number (1645056).

Almost surely, 2^22420643 is an apocalyptic number.

22420643 is a deficient number, since it is larger than the sum of its proper divisors (3900253).

22420643 is a wasteful number, since it uses less digits than its factorization.

22420643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 22420643 is about 4735.0441391818. The cubic root of 22420643 is about 281.9785163789.

The spelling of 22420643 in words is "twenty-two million, four hundred twenty thousand, six hundred forty-three".