33240004220 has 24 divisors (see below), whose sum is σ = 69815984784. Its totient is φ = 13293720576.

The previous prime is 33240004181. The next prime is 33240004229. The reversal of 33240004220 is 2240004233.

It is a super-2 number, since 2×33240004220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33240004192 and 33240004201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33240004229) 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, 20534 + ... + 258653.

It is an arithmetic number, because the mean of its divisors is an integer number (2908999366).

Almost surely, 2^33240004220 is an apocalyptic number.

It is an amenable number.

33240004220 is an abundant number, since it is smaller than the sum of its proper divisors (36575980564).

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

33240004220 is a wasteful number, since it uses less digits than its factorization.

33240004220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285149 (or 285147 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 33240004220 its reverse (2240004233), we get a palindrome (35480008453).

The spelling of 33240004220 in words is "thirty-three billion, two hundred forty million, four thousand, two hundred twenty".