21463622 has 32 divisors (see below), whose sum is σ = 35668512. Its totient is φ = 9644544.

The previous prime is 21463621. The next prime is 21463633. The reversal of 21463622 is 22636412.

It is a junction number, because it is equal to n+sod(n) for n = 21463591 and 21463600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21463621) 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, 77348 + ... + 77624.

It is an arithmetic number, because the mean of its divisors is an integer number (1114641).

Almost surely, 2^21463622 is an apocalyptic number.

21463622 is a deficient number, since it is larger than the sum of its proper divisors (14204890).

21463622 is a wasteful number, since it uses less digits than its factorization.

21463622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392.

The product of its digits is 3456, while the sum is 26.

The square root of 21463622 is about 4632.8848463997. The cubic root of 21463622 is about 277.9079711945.

It can be divided in two parts, 214 and 63622, that added together give a palindrome (63836).

The spelling of 21463622 in words is "twenty-one million, four hundred sixty-three thousand, six hundred twenty-two".