33213430 has 16 divisors (see below), whose sum is σ = 60011280. Its totient is φ = 13234912.

The previous prime is 33213419. The next prime is 33213437. The reversal of 33213430 is 3431233.

It is a super-2 number, since 2×33213430² = 2206263864729800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33213398 and 33213407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33213437) 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, 3484 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (3750705).

Almost surely, 2^33213430 is an apocalyptic number.

33213430 is a deficient number, since it is larger than the sum of its proper divisors (26797850).

33213430 is a wasteful number, since it uses less digits than its factorization.

33213430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12623.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 33213430 is about 5763.1094037854. The cubic root of 33213430 is about 321.4434466014.

Adding to 33213430 its reverse (3431233), we get a palindrome (36644663).

The spelling of 33213430 in words is "thirty-three million, two hundred thirteen thousand, four hundred thirty".