2981650 has 36 divisors (see below), whose sum is σ = 6456618. Its totient is φ = 1021440.

The previous prime is 2981597. The next prime is 2981653. The reversal of 2981650 is 561892.

It can be written as a sum of positive squares in 3 ways, for example, as 1979649 + 1002001 = 1407^2 + 1001^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981653) 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 17 ways as a sum of consecutive naturals, for example, 1842 + ... + 3058.

2^2981650 is an apocalyptic number.

2981650 is an abundant number, since it is smaller than the sum of its proper divisors (3474968).

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

2981650 is a wasteful number, since it uses less digits than its factorization.

2981650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2981650 is about 1726.7454936962. The cubic root of 2981650 is about 143.9302967697.

The spelling of 2981650 in words is "two million, nine hundred eighty-one thousand, six hundred fifty".