2992005 has 32 divisors (see below), whose sum is σ = 5472000. Its totient is φ = 1550016.

The previous prime is 2991971. The next prime is 2992007. The reversal of 2992005 is 5002992.

It is not a de Polignac number, because 2992005 - 2¹⁸ = 2729861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2992005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2992007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4696 + ... + 5294.

It is an arithmetic number, because the mean of its divisors is an integer number (171000).

2^2992005 is an apocalyptic number.

2992005 is the 999-th octagonal number.

It is an amenable number.

2992005 is a deficient number, since it is larger than the sum of its proper divisors (2479995).

2992005 is a wasteful number, since it uses less digits than its factorization.

2992005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 2992005 is about 1729.7413101386. The cubic root of 2992005 is about 144.0967232120.

Adding to 2992005 its reverse (5002992), we get a palindrome (7994997).

It can be divided in two parts, 299 and 2005, that added together give a square (2304 = 48²).

The spelling of 2992005 in words is "two million, nine hundred ninety-two thousand, five".