33540356 has 12 divisors (see below), whose sum is σ = 60719820. Its totient is φ = 16191840.

The previous prime is 33540343. The next prime is 33540359. The reversal of 33540356 is 65304533.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26357956 + 7182400 = 5134^2 + 2680^2 .

It is a super-2 number, since 2×33540356² = 2249910961213472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (33540359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144455 + ... + 144686.

It is an arithmetic number, because the mean of its divisors is an integer number (5059985).

Almost surely, 2^33540356 is an apocalyptic number.

It is an amenable number.

33540356 is a deficient number, since it is larger than the sum of its proper divisors (27179464).

33540356 is a wasteful number, since it uses less digits than its factorization.

33540356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289174 (or 289172 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 29.

The square root of 33540356 is about 5791.4036295185. The cubic root of 33540356 is about 322.4946809210.

Adding to 33540356 its reverse (65304533), we get a palindrome (98844889).

The spelling of 33540356 in words is "thirty-three million, five hundred forty thousand, three hundred fifty-six".