22154680 has 16 divisors (see below), whose sum is σ = 49848120. Its totient is φ = 8861856.

The previous prime is 22154669. The next prime is 22154683. The reversal of 22154680 is 8645122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276894 + ... + 276973.

Almost surely, 2^22154680 is an apocalyptic number.

22154680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22154680 is an abundant number, since it is smaller than the sum of its proper divisors (27693440).

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

22154680 is a wasteful number, since it uses less digits than its factorization.

22154680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553878 (or 553874 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22154680 is about 4706.8758216040. The cubic root of 22154680 is about 280.8590961190.

The spelling of 22154680 in words is "twenty-two million, one hundred fifty-four thousand, six hundred eighty".