21464522 has 8 divisors (see below), whose sum is σ = 32677536. Its totient is φ = 10572012.

The previous prime is 21464503. The next prime is 21464539. The reversal of 21464522 is 22546412.

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

It is a junction number, because it is equal to n+sod(n) for n = 21464491 and 21464500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79958 + ... + 80225.

It is an arithmetic number, because the mean of its divisors is an integer number (4084692).

Almost surely, 2^21464522 is an apocalyptic number.

21464522 is a deficient number, since it is larger than the sum of its proper divisors (11213014).

21464522 is a wasteful number, since it uses less digits than its factorization.

21464522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160252.

The product of its digits is 3840, while the sum is 26.

The square root of 21464522 is about 4632.9819770856. The cubic root of 21464522 is about 277.9118554982.

The spelling of 21464522 in words is "twenty-one million, four hundred sixty-four thousand, five hundred twenty-two".