2078156 has 6 divisors (see below), whose sum is σ = 3636780. Its totient is φ = 1039076.

The previous prime is 2078149. The next prime is 2078159. The reversal of 2078156 is 6518702.

It is not an unprimeable number, because it can be changed into a prime (2078159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259766 + ... + 259773.

It is an arithmetic number, because the mean of its divisors is an integer number (606130).

2^2078156 is an apocalyptic number.

It is an amenable number.

2078156 is a deficient number, since it is larger than the sum of its proper divisors (1558624).

2078156 is a wasteful number, since it uses less digits than its factorization.

2078156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519543 (or 519541 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2078156 is about 1441.5810764574. The cubic root of 2078156 is about 127.6123525874.

The spelling of 2078156 in words is "two million, seventy-eight thousand, one hundred fifty-six".