2981530 has 8 divisors (see below), whose sum is σ = 5366772. Its totient is φ = 1192608.

The previous prime is 2981527. The next prime is 2981533. The reversal of 2981530 is 351892.

It is an interprime number because it is at equal distance from previous prime (2981527) and next prime (2981533).

It can be written as a sum of positive squares in 2 ways, for example, as 2954961 + 26569 = 1719^2 + 163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2981530² = 17779042281800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2981533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149067 + ... + 149086.

2^2981530 is an apocalyptic number.

2981530 is a deficient number, since it is larger than the sum of its proper divisors (2385242).

2981530 is a wasteful number, since it uses less digits than its factorization.

2981530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298160.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2981530 is about 1726.7107458981. The cubic root of 2981530 is about 143.9283658626.

The spelling of 2981530 in words is "two million, nine hundred eighty-one thousand, five hundred thirty".