33406224 has 40 divisors (see below), whose sum is σ = 91378080. Its totient is φ = 10480128.

The previous prime is 33406193. The next prime is 33406229. The reversal of 33406224 is 42260433.

It is a happy number.

It is a super-2 number, since 2×33406224² = 2231951603876352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 33406194 and 33406203.

It is not an unprimeable number, because it can be changed into a prime (33406229) 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, 19654 + ... + 21285.

It is an arithmetic number, because the mean of its divisors is an integer number (2284452).

Almost surely, 2^33406224 is an apocalyptic number.

33406224 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

33406224 is an abundant number, since it is smaller than the sum of its proper divisors (57971856).

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

33406224 is a wasteful number, since it uses less digits than its factorization.

33406224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40967 (or 40961 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 33406224 is about 5779.8117616407. The cubic root of 33406224 is about 322.0642079692.

Adding to 33406224 its reverse (42260433), we get a palindrome (75666657).

The spelling of 33406224 in words is "thirty-three million, four hundred six thousand, two hundred twenty-four".