22142064 has 40 divisors (see below), whose sum is σ = 65372800. Its totient is φ = 6326208.

The previous prime is 22142059. The next prime is 22142089. The reversal of 22142064 is 46024122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22142064.

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, 32614 + ... + 33285.

It is an arithmetic number, because the mean of its divisors is an integer number (1634320).

Almost surely, 2^22142064 is an apocalyptic number.

22142064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22142064 is an abundant number, since it is smaller than the sum of its proper divisors (43230736).

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

22142064 is a wasteful number, since it uses less digits than its factorization.

22142064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65917 (or 65911 counting only the distinct ones).

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

The square root of 22142064 is about 4705.5354636853. The cubic root of 22142064 is about 280.8057741850.

Adding to 22142064 its reverse (46024122), we get a palindrome (68166186).

It can be divided in two parts, 2214 and 2064, that added together give a triangular number (4278 = T₉₂).

The spelling of 22142064 in words is "twenty-two million, one hundred forty-two thousand, sixty-four".