21273014 has 16 divisors (see below), whose sum is σ = 37358496. Its totient is φ = 8894400.

The previous prime is 21273013. The next prime is 21273017. The reversal of 21273014 is 41037212.

It is a super-2 number, since 2×21273014² = 905082249288392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21273011) 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, 17957 + ... + 19104.

It is an arithmetic number, because the mean of its divisors is an integer number (2334906).

Almost surely, 2^21273014 is an apocalyptic number.

21273014 is a deficient number, since it is larger than the sum of its proper divisors (16085482).

21273014 is a wasteful number, since it uses less digits than its factorization.

21273014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37111.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 21273014 is about 4612.2677719317. The cubic root of 21273014 is about 277.0828686797.

The spelling of 21273014 in words is "twenty-one million, two hundred seventy-three thousand, fourteen".