3453978 has 32 divisors (see below), whose sum is σ = 7672320. Its totient is φ = 1027760.

The previous prime is 3453973. The next prime is 3453997. The reversal of 3453978 is 8793543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3453971) 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, 3451 + ... + 4337.

It is an arithmetic number, because the mean of its divisors is an integer number (239760).

Almost surely, 2^3453978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3453978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3836160).

3453978 is an abundant number, since it is smaller than the sum of its proper divisors (4218342).

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

3453978 is a wasteful number, since it uses less digits than its factorization.

3453978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962.

The product of its digits is 90720, while the sum is 39.

The square root of 3453978 is about 1858.4880952000. The cubic root of 3453978 is about 151.1610345828.

The spelling of 3453978 in words is "three million, four hundred fifty-three thousand, nine hundred seventy-eight".