2640029 has 4 divisors (see below), whose sum is σ = 3017184. Its totient is φ = 2262876.

The previous prime is 2640023. The next prime is 2640041. The reversal of 2640029 is 9200462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9200462 = 2 ⋅4600231.

It is not a de Polignac number, because 2640029 - 2⁴ = 2640013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2639986 and 2640013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640023) 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, 188567 + ... + 188580.

It is an arithmetic number, because the mean of its divisors is an integer number (754296).

2^2640029 is an apocalyptic number.

It is an amenable number.

2640029 is a deficient number, since it is larger than the sum of its proper divisors (377155).

2640029 is an equidigital number, since it uses as much as digits as its factorization.

2640029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377154.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2640029 is about 1624.8166050358. The cubic root of 2640029 is about 138.2089706647.

The spelling of 2640029 in words is "two million, six hundred forty thousand, twenty-nine".