21314546 has 16 divisors (see below), whose sum is σ = 36004608. Its totient is φ = 9375600.

The previous prime is 21314543. The next prime is 21314551. The reversal of 21314546 is 64541312.

It is a super-2 number, since 2×21314546² = 908619742372232, which contains 22 as substring.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (21314543) 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, 14945 + ... + 16308.

It is an arithmetic number, because the mean of its divisors is an integer number (2250288).

Almost surely, 2^21314546 is an apocalyptic number.

21314546 is a deficient number, since it is larger than the sum of its proper divisors (14690062).

21314546 is a wasteful number, since it uses less digits than its factorization.

21314546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31297.

The product of its digits is 2880, while the sum is 26.

The square root of 21314546 is about 4616.7679170606. The cubic root of 21314546 is about 277.2630707704.

Adding to 21314546 its reverse (64541312), we get a palindrome (85855858).

The spelling of 21314546 in words is "twenty-one million, three hundred fourteen thousand, five hundred forty-six".