3428778 has 24 divisors (see below), whose sum is σ = 7242048. Its totient is φ = 1082088.

The previous prime is 3428743. The next prime is 3428783. The reversal of 3428778 is 8778243.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1375 + ... + 2957.

It is an arithmetic number, because the mean of its divisors is an integer number (301752).

Almost surely, 2^3428778 is an apocalyptic number.

3428778 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3428778 is an abundant number, since it is smaller than the sum of its proper divisors (3813270).

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

3428778 is a wasteful number, since it uses less digits than its factorization.

3428778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1607 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 3428778 is about 1851.6959793659. The cubic root of 3428778 is about 150.7925165206.

The spelling of 3428778 in words is "three million, four hundred twenty-eight thousand, seven hundred seventy-eight".