33401320 has 16 divisors (see below), whose sum is σ = 75153060. Its totient is φ = 13360512.

The previous prime is 33401317. The next prime is 33401327. The reversal of 33401320 is 2310433.

It can be written as a sum of positive squares in 2 ways, for example, as 30096196 + 3305124 = 5486^2 + 1818^2 .

It is a super-2 number, since 2×33401320² = 2231296355484800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33401294 and 33401303.

It is not an unprimeable number, because it can be changed into a prime (33401327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417477 + ... + 417556.

Almost surely, 2^33401320 is an apocalyptic number.

It is an amenable number.

33401320 is an abundant number, since it is smaller than the sum of its proper divisors (41751740).

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

33401320 is a wasteful number, since it uses less digits than its factorization.

33401320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835044 (or 835040 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 33401320 is about 5779.3875108008. The cubic root of 33401320 is about 322.0484476310.

Adding to 33401320 its reverse (2310433), we get a palindrome (35711753).

The spelling of 33401320 in words is "thirty-three million, four hundred one thousand, three hundred twenty".