33400404234 has 12 divisors (see below), whose sum is σ = 72367542546. Its totient is φ = 11133468072.

The previous prime is 33400404211. The next prime is 33400404239. The reversal of 33400404234 is 43240400433.

It can be written as a sum of positive squares in only one way, i.e., 23056904025 + 10343500209 = 151845^2 + 101703^2 .

It is a super-2 number, since 2×33400404234² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33400404198 and 33400404207.

It is not an unprimeable number, because it can be changed into a prime (33400404239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 927788989 + ... + 927789024.

Almost surely, 2^33400404234 is an apocalyptic number.

33400404234 is an abundant number, since it is smaller than the sum of its proper divisors (38967138312).

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

33400404234 is a wasteful number, since it uses less digits than its factorization.

33400404234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855578021 (or 1855578018 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 33400404234 its reverse (43240400433), we get a palindrome (76640804667).

The spelling of 33400404234 in words is "thirty-three billion, four hundred million, four hundred four thousand, two hundred thirty-four".