33540020 has 12 divisors (see below), whose sum is σ = 70434084. Its totient is φ = 13416000.

The previous prime is 33540011. The next prime is 33540053. The reversal of 33540020 is 2004533.

It can be written as a sum of positive squares in 2 ways, for example, as 19731364 + 13808656 = 4442^2 + 3716^2 .

It is a super-2 number, since 2×33540020² = 2249865883200800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838481 + ... + 838520.

It is an arithmetic number, because the mean of its divisors is an integer number (5869507).

Almost surely, 2^33540020 is an apocalyptic number.

It is an amenable number.

33540020 is an abundant number, since it is smaller than the sum of its proper divisors (36894064).

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

33540020 is a wasteful number, since it uses less digits than its factorization.

33540020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677010 (or 1677008 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 33540020 is about 5791.3746209341. The cubic root of 33540020 is about 322.4936040235.

Adding to 33540020 its reverse (2004533), we get a palindrome (35544553).

The spelling of 33540020 in words is "thirty-three million, five hundred forty thousand, twenty".