33378402 has 16 divisors (see below), whose sum is σ = 70270560. Its totient is φ = 10540512.

The previous prime is 33378377. The next prime is 33378409. The reversal of 33378402 is 20487333.

It is a super-2 number, since 2×33378402² = 2228235440147208, 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 33378402.

It is not an unprimeable number, because it can be changed into a prime (33378409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146283 + ... + 146510.

It is an arithmetic number, because the mean of its divisors is an integer number (4391910).

Almost surely, 2^33378402 is an apocalyptic number.

33378402 is an abundant number, since it is smaller than the sum of its proper divisors (36892158).

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

33378402 is a wasteful number, since it uses less digits than its factorization.

33378402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292817.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 33378402 is about 5777.4044345190. The cubic root of 33378402 is about 321.9747739455.

The spelling of 33378402 in words is "thirty-three million, three hundred seventy-eight thousand, four hundred two".