33878401 has 2 divisors, whose sum is σ = 33878402. Its totient is φ = 33878400.

The previous prime is 33878389. The next prime is 33878413. The reversal of 33878401 is 10487833.

It is a balanced prime because it is at equal distance from previous prime (33878389) and next prime (33878413).

It can be written as a sum of positive squares in only one way, i.e., 33628401 + 250000 = 5799^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 33878401 - 2¹³ = 33870209 is a prime.

It is a super-2 number, since 2×33878401² = 2295492108633602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33878461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16939200 + 16939201.

It is an arithmetic number, because the mean of its divisors is an integer number (16939201).

Almost surely, 2^33878401 is an apocalyptic number.

It is an amenable number.

33878401 is a deficient number, since it is larger than the sum of its proper divisors (1).

33878401 is an equidigital number, since it uses as much as digits as its factorization.

33878401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 33878401 is about 5820.5155269959. The cubic root of 33878401 is about 323.5745094243.

It can be divided in two parts, 33878 and 401, that multiplied together give a triangular number (13585078 = T₅₂₁₂).

The spelling of 33878401 in words is "thirty-three million, eight hundred seventy-eight thousand, four hundred one".