33540402 has 24 divisors (see below), whose sum is σ = 78033456. Its totient is φ = 9582888.

The previous prime is 33540391. The next prime is 33540413. The reversal of 33540402 is 20404533.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (33540391) and next prime (33540413).

It is a super-2 number, since 2×33540402² = 2249917132643208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 56748 + ... + 57335.

It is an arithmetic number, because the mean of its divisors is an integer number (3251394).

Almost surely, 2^33540402 is an apocalyptic number.

33540402 is an abundant number, since it is smaller than the sum of its proper divisors (44493054).

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

33540402 is a wasteful number, since it uses less digits than its factorization.

33540402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114102 (or 114095 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 33540402 is about 5791.4076009205. The cubic root of 33540402 is about 322.4948283529.

Adding to 33540402 its reverse (20404533), we get a palindrome (53944935).

The spelling of 33540402 in words is "thirty-three million, five hundred forty thousand, four hundred two".