2078420 has 24 divisors (see below), whose sum is σ = 4622184. Its totient is φ = 782336.

The previous prime is 2078399. The next prime is 2078431. The reversal of 2078420 is 248702.

It can be written as a sum of positive squares in 4 ways, for example, as 470596 + 1607824 = 686^2 + 1268^2 .

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, 2717 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (192591).

2^2078420 is an apocalyptic number.

2078420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2078420 is an abundant number, since it is smaller than the sum of its proper divisors (2543764).

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

2078420 is a wasteful number, since it uses less digits than its factorization.

2078420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139 (or 6137 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2078420 is about 1441.6726396793. The cubic root of 2078420 is about 127.6177561333.

The spelling of 2078420 in words is "two million, seventy-eight thousand, four hundred twenty".