21461614 has 16 divisors (see below), whose sum is σ = 33405120. Its totient is φ = 10333440.

The previous prime is 21461611. The next prime is 21461617. The reversal of 21461614 is 41616412.

It is an interprime number because it is at equal distance from previous prime (21461611) and next prime (21461617).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21461611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4822 + ... + 8134.

It is an arithmetic number, because the mean of its divisors is an integer number (2087820).

Almost surely, 2^21461614 is an apocalyptic number.

21461614 is a deficient number, since it is larger than the sum of its proper divisors (11943506).

21461614 is a wasteful number, since it uses less digits than its factorization.

21461614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435.

The product of its digits is 1152, while the sum is 25.

The square root of 21461614 is about 4632.6681297067. The cubic root of 21461614 is about 277.8993044900.

The spelling of 21461614 in words is "twenty-one million, four hundred sixty-one thousand, six hundred fourteen".