21464298 has 32 divisors (see below), whose sum is σ = 48283200. Its totient is φ = 7067088.

The previous prime is 21464297. The next prime is 21464299. The reversal of 21464298 is 89246412.

21464298 is a `hidden beast` number, since 2 + 1 + 4 + 642 + 9 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (21464297) and next prime (21464299).

It is not an unprimeable number, because it can be changed into a prime (21464291) 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, 2088 + ... + 6876.

It is an arithmetic number, because the mean of its divisors is an integer number (1508850).

Almost surely, 2^21464298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21464298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24141600).

21464298 is an abundant number, since it is smaller than the sum of its proper divisors (26818902).

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

21464298 is a wasteful number, since it uses less digits than its factorization.

21464298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4883 (or 4877 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 21464298 is about 4632.9578025275. The cubic root of 21464298 is about 277.9108887483.

The spelling of 21464298 in words is "twenty-one million, four hundred sixty-four thousand, two hundred ninety-eight".