22151694 has 8 divisors (see below), whose sum is σ = 44303400. Its totient is φ = 7383896.

The previous prime is 22151687. The next prime is 22151699. The reversal of 22151694 is 49615122.

It is a sphenic number, since it is the product of 3 distinct primes.

22151694 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22151699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845969 + ... + 1845980.

It is an arithmetic number, because the mean of its divisors is an integer number (5537925).

Almost surely, 2^22151694 is an apocalyptic number.

22151694 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22151694 is a wasteful number, since it uses less digits than its factorization.

22151694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691954.

The product of its digits is 4320, while the sum is 30.

The square root of 22151694 is about 4706.5586153792. The cubic root of 22151694 is about 280.8464775219.

It can be divided in two parts, 221 and 51694, that added together give a palindrome (51915).

The spelling of 22151694 in words is "twenty-two million, one hundred fifty-one thousand, six hundred ninety-four".