2891402 has 16 divisors (see below), whose sum is σ = 4567752. Its totient is φ = 1370880.

The previous prime is 2891389. The next prime is 2891407. The reversal of 2891402 is 2041982.

It can be written as a sum of positive squares in 4 ways, for example, as 2253001 + 638401 = 1501^2 + 799^2 .

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2558 + ... + 3510.

2^2891402 is an apocalyptic number.

2891402 is a deficient number, since it is larger than the sum of its proper divisors (1676350).

2891402 is a wasteful number, since it uses less digits than its factorization.

2891402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2891402 is about 1700.4123029430. The cubic root of 2891402 is about 142.4632428022.

The spelling of 2891402 in words is "two million, eight hundred ninety-one thousand, four hundred two".