33013530 has 48 divisors (see below), whose sum is σ = 93641184. Its totient is φ = 8003040.

The previous prime is 33013529. The next prime is 33013573. The reversal of 33013530 is 3531033.

It is a Harshad number since it is a multiple of its sum of digits (18).

33013530 is a modest number, since divided by 13530 gives 330 as remainder.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15684 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (1950858).

Almost surely, 2^33013530 is an apocalyptic number.

33013530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33013530 is an abundant number, since it is smaller than the sum of its proper divisors (60627654).

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

33013530 is a wasteful number, since it uses less digits than its factorization.

33013530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33371 (or 33368 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 18.

The square root of 33013530 is about 5745.7401611977. The cubic root of 33013530 is about 320.7972633125.

Adding to 33013530 its reverse (3531033), we get a palindrome (36544563).

The spelling of 33013530 in words is "thirty-three million, thirteen thousand, five hundred thirty".