33894732906 has 32 divisors (see below), whose sum is σ = 79752314880. Its totient is φ = 10633641408.

The previous prime is 33894732901. The next prime is 33894732919. The reversal of 33894732906 is 60923749833.

33894732906 is a `hidden beast` number, since 3 + 3 + 89 + 473 + 2 + 90 + 6 = 666.

It is a super-2 number, since 2×33894732906² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (33894732901) 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, 18460266 + ... + 18462101.

It is an arithmetic number, because the mean of its divisors is an integer number (2492259840).

Almost surely, 2^33894732906 is an apocalyptic number.

33894732906 is an abundant number, since it is smaller than the sum of its proper divisors (45857581974).

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

33894732906 is a wasteful number, since it uses less digits than its factorization.

33894732906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36922395 (or 36922389 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 33894732906 in words is "thirty-three billion, eight hundred ninety-four million, seven hundred thirty-two thousand, nine hundred six".