21349062 has 32 divisors (see below), whose sum is σ = 54220800. Its totient is φ = 6099624.

The previous prime is 21349057. The next prime is 21349063. The reversal of 21349062 is 26094312.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21349063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27862 + ... + 28617.

It is an arithmetic number, because the mean of its divisors is an integer number (1694400).

Almost surely, 2^21349062 is an apocalyptic number.

21349062 is an abundant number, since it is smaller than the sum of its proper divisors (32871738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21349062 is a wasteful number, since it uses less digits than its factorization.

21349062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56497 (or 56491 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 21349062 is about 4620.5045179071. The cubic root of 21349062 is about 277.4126532983.

The spelling of 21349062 in words is "twenty-one million, three hundred forty-nine thousand, sixty-two".