3402778 has 4 divisors (see below), whose sum is σ = 5104170. Its totient is φ = 1701388.

The previous prime is 3402743. The next prime is 3402787. The reversal of 3402778 is 8772043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2486929 + 915849 = 1577^2 + 957^2 .

It is a super-3 number, since 3×3402778³ (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 850693 + ... + 850696.

Almost surely, 2^3402778 is an apocalyptic number.

3402778 is a deficient number, since it is larger than the sum of its proper divisors (1701392).

3402778 is a wasteful number, since it uses less digits than its factorization.

3402778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701391.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 3402778 is about 1844.6620286654. The cubic root of 3402778 is about 150.4104020363.

The spelling of 3402778 in words is "three million, four hundred two thousand, seven hundred seventy-eight".