22347993 has 16 divisors (see below), whose sum is σ = 31514112. Its totient is φ = 14064000.

The previous prime is 22347991. The next prime is 22348057. The reversal of 22347993 is 39974322.

It is not a de Polignac number, because 22347993 - 2¹ = 22347991 is a prime.

It is a super-2 number, since 2×22347993² = 998865582256098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22347991) 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, 883 + ... + 6743.

It is an arithmetic number, because the mean of its divisors is an integer number (1969632).

Almost surely, 2^22347993 is an apocalyptic number.

It is an amenable number.

22347993 is a deficient number, since it is larger than the sum of its proper divisors (9166119).

22347993 is a wasteful number, since it uses less digits than its factorization.

22347993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936.

The product of its digits is 81648, while the sum is 39.

The square root of 22347993 is about 4727.3663915546. The cubic root of 22347993 is about 281.6736201887.

The spelling of 22347993 in words is "twenty-two million, three hundred forty-seven thousand, nine hundred ninety-three".