21460623 has 8 divisors (see below), whose sum is σ = 29223168. Its totient is φ = 14002584.

The previous prime is 21460603. The next prime is 21460643. The reversal of 21460623 is 32606412.

It is an interprime number because it is at equal distance from previous prime (21460603) and next prime (21460643).

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

It is not a de Polignac number, because 21460623 - 2⁵ = 21460591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21460593 and 21460602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21460603) 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, 75961 + ... + 76242.

It is an arithmetic number, because the mean of its divisors is an integer number (3652896).

Almost surely, 2^21460623 is an apocalyptic number.

21460623 is a deficient number, since it is larger than the sum of its proper divisors (7762545).

21460623 is a wasteful number, since it uses less digits than its factorization.

21460623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152253.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 21460623 is about 4632.5611706701. The cubic root of 21460623 is about 277.8950270476.

The spelling of 21460623 in words is "twenty-one million, four hundred sixty thousand, six hundred twenty-three".