2780029 has 8 divisors (see below), whose sum is σ = 3189888. Its totient is φ = 2373360.

The previous prime is 2779991. The next prime is 2780039. The reversal of 2780029 is 9200872.

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 2780029 - 2¹¹ = 2777981 is a prime.

It is a super-2 number, since 2×2780029² = 15457122481682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2779979 and 2780006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780039) 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, 1539 + ... + 2815.

It is an arithmetic number, because the mean of its divisors is an integer number (398736).

2^2780029 is an apocalyptic number.

It is an amenable number.

2780029 is a deficient number, since it is larger than the sum of its proper divisors (409859).

2780029 is a wasteful number, since it uses less digits than its factorization.

2780029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2780029 is about 1667.3418965527. The cubic root of 2780029 is about 140.6100757166.

The spelling of 2780029 in words is "two million, seven hundred eighty thousand, twenty-nine".