33806686940 has 48 divisors (see below), whose sum is σ = 78319906560. Its totient is φ = 12178014720.

The previous prime is 33806686937. The next prime is 33806686943. The reversal of 33806686940 is 4968660833.

It is an interprime number because it is at equal distance from previous prime (33806686937) and next prime (33806686943).

It is a super-2 number, since 2×33806686940² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33806686943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1575020 + ... + 1596339.

It is an arithmetic number, because the mean of its divisors is an integer number (1631664720).

Almost surely, 2^33806686940 is an apocalyptic number.

It is an amenable number.

33806686940 is an abundant number, since it is smaller than the sum of its proper divisors (44513219620).

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

33806686940 is a wasteful number, since it uses less digits than its factorization.

33806686940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171422 (or 3171420 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 33806686940 in words is "thirty-three billion, eight hundred six million, six hundred eighty-six thousand, nine hundred forty".