3427820 has 24 divisors (see below), whose sum is σ = 7853328. Its totient is φ = 1246400.

The previous prime is 3427819. The next prime is 3427843. The reversal of 3427820 is 287243.

It is a self number, because there is not a number n which added to its sum of digits gives 3427820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7571 + ... + 8010.

It is an arithmetic number, because the mean of its divisors is an integer number (327222).

Almost surely, 2^3427820 is an apocalyptic number.

It is an amenable number.

3427820 is an abundant number, since it is smaller than the sum of its proper divisors (4425508).

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

3427820 is a wasteful number, since it uses less digits than its factorization.

3427820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15601 (or 15599 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 3427820 is about 1851.4372795210. The cubic root of 3427820 is about 150.7784714111.

The spelling of 3427820 in words is "three million, four hundred twenty-seven thousand, eight hundred twenty".