22040704 has 64 divisors (see below), whose sum is σ = 53170560. Its totient is φ = 8884224.

The previous prime is 22040699. The next prime is 22040713. The reversal of 22040704 is 40704022.

It is a tau number, because it is divible by the number of its divisors (64).

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, 14509 + ... + 15955.

It is an arithmetic number, because the mean of its divisors is an integer number (830790).

Almost surely, 2^22040704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22040704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26585280).

22040704 is an abundant number, since it is smaller than the sum of its proper divisors (31129856).

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

22040704 is a wasteful number, since it uses less digits than its factorization.

22040704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 22040704 is about 4694.7528156443. The cubic root of 22040704 is about 280.3766360061.

Adding to 22040704 its reverse (40704022), we get a palindrome (62744726).

The spelling of 22040704 in words is "twenty-two million, forty thousand, seven hundred four".