2845940 has 12 divisors (see below), whose sum is σ = 5976516. Its totient is φ = 1138368.

The previous prime is 2845907. The next prime is 2845949. The reversal of 2845940 is 495482.

It can be written as a sum of positive squares in 2 ways, for example, as 1582564 + 1263376 = 1258^2 + 1124^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2845897 and 2845906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2845949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71129 + ... + 71168.

It is an arithmetic number, because the mean of its divisors is an integer number (498043).

2^2845940 is an apocalyptic number.

2845940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2845940 is an abundant number, since it is smaller than the sum of its proper divisors (3130576).

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

2845940 is a wasteful number, since it uses less digits than its factorization.

2845940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142306 (or 142304 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 2845940 is about 1686.9914048388. The cubic root of 2845940 is about 141.7126371380.

It can be divided in two parts, 2 and 845940, that multiplied together give a triangular number (1691880 = T₁₈₃₉).

The spelling of 2845940 in words is "two million, eight hundred forty-five thousand, nine hundred forty".