21846468 has 48 divisors (see below), whose sum is σ = 58526720. Its totient is φ = 6213024.

The previous prime is 21846467. The next prime is 21846469. The reversal of 21846468 is 86464812.

It is an interprime number because it is at equal distance from previous prime (21846467) and next prime (21846469).

It is not an unprimeable number, because it can be changed into a prime (21846463) 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, 23313 + ... + 24231.

Almost surely, 2^21846468 is an apocalyptic number.

21846468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21846468 is an abundant number, since it is smaller than the sum of its proper divisors (36680252).

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

21846468 is a wasteful number, since it uses less digits than its factorization.

21846468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216 (or 1214 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 21846468 is about 4674.0205391076. The cubic root of 21846468 is about 279.5505885861.

The spelling of 21846468 in words is "twenty-one million, eight hundred forty-six thousand, four hundred sixty-eight".