21374052 has 48 divisors (see below), whose sum is σ = 58084992. Its totient is φ = 5990400.

The previous prime is 21374051. The next prime is 21374071. The reversal of 21374052 is 25047312.

It is not an unprimeable number, because it can be changed into a prime (21374051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2052 + ... + 6852.

It is an arithmetic number, because the mean of its divisors is an integer number (1210104).

Almost surely, 2^21374052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21374052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29042496).

21374052 is an abundant number, since it is smaller than the sum of its proper divisors (36710940).

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

21374052 is a wasteful number, since it uses less digits than its factorization.

21374052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868 (or 4866 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 21374052 is about 4623.2079771518. The cubic root of 21374052 is about 277.5208522599.

The spelling of 21374052 in words is "twenty-one million, three hundred seventy-four thousand, fifty-two".