2930881 has 8 divisors (see below), whose sum is σ = 3041064. Its totient is φ = 2822400.

The previous prime is 2930869. The next prime is 2930887. The reversal of 2930881 is 1880392.

It can be written as a sum of positive squares in 4 ways, for example, as 665856 + 2265025 = 816^2 + 1505^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2930881 - 2⁵ = 2930849 is a prime.

It is a super-2 number, since 2×2930881² = 17180126872322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2930887) 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, 3831 + ... + 4531.

It is an arithmetic number, because the mean of its divisors is an integer number (380133).

2^2930881 is an apocalyptic number.

It is an amenable number.

2930881 is a deficient number, since it is larger than the sum of its proper divisors (110183).

2930881 is a wasteful number, since it uses less digits than its factorization.

2930881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 2930881 is about 1711.9816003684. The cubic root of 2930881 is about 143.1087083151.

The spelling of 2930881 in words is "two million, nine hundred thirty thousand, eight hundred eighty-one".