21359334 has 16 divisors (see below), whose sum is σ = 42787440. Its totient is φ = 7108320.

The previous prime is 21359329. The next prime is 21359353. The reversal of 21359334 is 43395312.

It is a super-2 number, since 2×21359334² = 912442297847112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1744 + ... + 6764.

It is an arithmetic number, because the mean of its divisors is an integer number (2674215).

Almost surely, 2^21359334 is an apocalyptic number.

21359334 is an abundant number, since it is smaller than the sum of its proper divisors (21428106).

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

21359334 is a wasteful number, since it uses less digits than its factorization.

21359334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735.

The product of its digits is 9720, while the sum is 30.

The square root of 21359334 is about 4621.6159511582. The cubic root of 21359334 is about 277.4571380923.

The spelling of 21359334 in words is "twenty-one million, three hundred fifty-nine thousand, three hundred thirty-four".