22175740 has 24 divisors (see below), whose sum is σ = 47360880. Its totient is φ = 8719488.

The previous prime is 22175731. The next prime is 22175743. The reversal of 22175740 is 4757122.

It is a junction number, because it is equal to n+sod(n) for n = 22175699 and 22175708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22175743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8217 + ... + 10576.

It is an arithmetic number, because the mean of its divisors is an integer number (1973370).

Almost surely, 2^22175740 is an apocalyptic number.

22175740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22175740 is an abundant number, since it is smaller than the sum of its proper divisors (25185140).

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

22175740 is a wasteful number, since it uses less digits than its factorization.

22175740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18861 (or 18859 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 22175740 is about 4709.1124429132. The cubic root of 22175740 is about 280.9480618115.

The spelling of 22175740 in words is "twenty-two million, one hundred seventy-five thousand, seven hundred forty".