21623114 has 8 divisors (see below), whose sum is σ = 32599908. Its totient is φ = 10756480.

The previous prime is 21623101. The next prime is 21623131. The reversal of 21623114 is 41132612.

It can be written as a sum of positive squares in 2 ways, for example, as 21576025 + 47089 = 4645^2 + 217^2 .

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

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, 27047 + ... + 27834.

Almost surely, 2^21623114 is an apocalyptic number.

21623114 is a deficient number, since it is larger than the sum of its proper divisors (10976794).

21623114 is a wasteful number, since it uses less digits than its factorization.

21623114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55080.

The product of its digits is 288, while the sum is 20.

The square root of 21623114 is about 4650.0660210367. The cubic root of 21623114 is about 278.5946332006.

Adding to 21623114 its reverse (41132612), we get a palindrome (62755726).

The spelling of 21623114 in words is "twenty-one million, six hundred twenty-three thousand, one hundred fourteen".