33678416 has 10 divisors (see below), whose sum is σ = 65251962. Its totient is φ = 16839200.

The previous prime is 33678409. The next prime is 33678419. The reversal of 33678416 is 61487633.

It can be written as a sum of positive squares in only one way, i.e., 33640000 + 38416 = 5800^2 + 196^2 .

It is a super-2 number, since 2×33678416² = 2268471408538112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33678416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33678419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052435 + ... + 1052466.

Almost surely, 2^33678416 is an apocalyptic number.

It is an amenable number.

33678416 is a deficient number, since it is larger than the sum of its proper divisors (31573546).

33678416 is a wasteful number, since it uses less digits than its factorization.

33678416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104909 (or 2104903 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 33678416 is about 5803.3107792018. The cubic root of 33678416 is about 322.9365631824.

The spelling of 33678416 in words is "thirty-three million, six hundred seventy-eight thousand, four hundred sixteen".