2801156 has 24 divisors (see below), whose sum is σ = 5090904. Its totient is φ = 1347840.

The previous prime is 2801137. The next prime is 2801179. The reversal of 2801156 is 6511082.

It can be written as a sum of positive squares in 4 ways, for example, as 111556 + 2689600 = 334^2 + 1640^2 .

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, 15386 + ... + 15566.

It is an arithmetic number, because the mean of its divisors is an integer number (212121).

2^2801156 is an apocalyptic number.

It is an amenable number.

2801156 is a deficient number, since it is larger than the sum of its proper divisors (2289748).

2801156 is a wasteful number, since it uses less digits than its factorization.

2801156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2801156 is about 1673.6654384912. The cubic root of 2801156 is about 140.9653688233.

The spelling of 2801156 in words is "two million, eight hundred one thousand, one hundred fifty-six".