33423890136 has 256 divisors, whose sum is σ = 104741683200. Its totient is φ = 8653478400.

The previous prime is 33423890117. The next prime is 33423890141. The reversal of 33423890136 is 63109832433.

It is a super-2 number, since 2×33423890136² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68072851 + ... + 68073341.

It is an arithmetic number, because the mean of its divisors is an integer number (409147200).

Almost surely, 2^33423890136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33423890136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52370841600).

33423890136 is an abundant number, since it is smaller than the sum of its proper divisors (71317793064).

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

33423890136 is a wasteful number, since it uses less digits than its factorization.

33423890136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 33423890136 in words is "thirty-three billion, four hundred twenty-three million, eight hundred ninety thousand, one hundred thirty-six".