21419088 has 20 divisors (see below), whose sum is σ = 55332768. Its totient is φ = 7139680.

The previous prime is 21419087. The next prime is 21419089. The reversal of 21419088 is 88091412.

It is an interprime number because it is at equal distance from previous prime (21419087) and next prime (21419089).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21419087) 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, 223068 + ... + 223163.

Almost surely, 2^21419088 is an apocalyptic number.

It is an amenable number.

21419088 is an abundant number, since it is smaller than the sum of its proper divisors (33913680).

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

21419088 is a wasteful number, since it uses less digits than its factorization.

21419088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446242 (or 446236 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 21419088 is about 4628.0760581477. The cubic root of 21419088 is about 277.7156314424.

The spelling of 21419088 in words is "twenty-one million, four hundred nineteen thousand, eighty-eight".