33423040240 has 40 divisors (see below), whose sum is σ = 77791324608. Its totient is φ = 13354978560.

The previous prime is 33423040229. The next prime is 33423040267. The reversal of 33423040240 is 4204032433.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×33423040240² (a number of 22 digits) 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 7 ways as a sum of consecutive naturals, for example, 146712 + ... + 297271.

Almost surely, 2^33423040240 is an apocalyptic number.

It is an amenable number.

33423040240 is an abundant number, since it is smaller than the sum of its proper divisors (44368284368).

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

33423040240 is a wasteful number, since it uses less digits than its factorization.

33423040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444937 (or 444931 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 33423040240 its reverse (4204032433), we get a palindrome (37627072673).

The spelling of 33423040240 in words is "thirty-three billion, four hundred twenty-three million, forty thousand, two hundred forty".