22321340 has 24 divisors (see below), whose sum is σ = 49632912. Its totient is φ = 8403200.

The previous prime is 22321337. The next prime is 22321363. The reversal of 22321340 is 4312322.

It is a super-3 number, since 3×22321340³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 32486 + ... + 33165.

It is an arithmetic number, because the mean of its divisors is an integer number (2068038).

Almost surely, 2^22321340 is an apocalyptic number.

22321340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22321340 is an abundant number, since it is smaller than the sum of its proper divisors (27311572).

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

22321340 is a wasteful number, since it uses less digits than its factorization.

22321340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65677 (or 65675 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22321340 is about 4724.5465390871. The cubic root of 22321340 is about 281.5615976978.

Adding to 22321340 its reverse (4312322), we get a palindrome (26633662).

The spelling of 22321340 in words is "twenty-two million, three hundred twenty-one thousand, three hundred forty".