3402378 has 32 divisors (see below), whose sum is σ = 8641920. Its totient is φ = 972000.

The previous prime is 3402359. The next prime is 3402379. The reversal of 3402378 is 8732043.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3402379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4123 + ... + 4878.

It is an arithmetic number, because the mean of its divisors is an integer number (270060).

Almost surely, 2^3402378 is an apocalyptic number.

3402378 is an abundant number, since it is smaller than the sum of its proper divisors (5239542).

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

3402378 is a wasteful number, since it uses less digits than its factorization.

3402378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9019 (or 9013 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 3402378 is about 1844.5536045342. The cubic root of 3402378 is about 150.4045081737.

It can be divided in two parts, 3402 and 378, that multiplied together give a square (1285956 = 1134²).

The spelling of 3402378 in words is "three million, four hundred two thousand, three hundred seventy-eight".