21233034 has 24 divisors (see below), whose sum is σ = 48711780. Its totient is φ = 6661248.

The previous prime is 21233029. The next prime is 21233059. The reversal of 21233034 is 43033212.

21233034 = T₁₅₇₂ + T₁₅₇₃ + ... + T₁₅₈₈.

It can be written as a sum of positive squares in 2 ways, for example, as 20223009 + 1010025 = 4497^2 + 1005^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21232998 and 21233016.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34389 + ... + 35000.

Almost surely, 2^21233034 is an apocalyptic number.

21233034 is an abundant number, since it is smaller than the sum of its proper divisors (27478746).

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

21233034 is a wasteful number, since it uses less digits than its factorization.

21233034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69414 (or 69411 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 21233034 is about 4607.9316401179. The cubic root of 21233034 is about 276.9091788253.

Adding to 21233034 its reverse (43033212), we get a palindrome (64266246).

The spelling of 21233034 in words is "twenty-one million, two hundred thirty-three thousand, thirty-four".