2769021 has 6 divisors (see below), whose sum is σ = 3999710. Its totient is φ = 1846008.

The previous prime is 2769001. The next prime is 2769031. The reversal of 2769021 is 1209672.

It can be written as a sum of positive squares in only one way, i.e., 2604996 + 164025 = 1614^2 + 405^2 .

It is not a de Polignac number, because 2769021 - 2⁵ = 2768989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2769001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153826 + ... + 153843.

2^2769021 is an apocalyptic number.

It is an amenable number.

2769021 is a deficient number, since it is larger than the sum of its proper divisors (1230689).

2769021 is a wasteful number, since it uses less digits than its factorization.

2769021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307675 (or 307672 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2769021 is about 1664.0375596723. The cubic root of 2769021 is about 140.4242403419.

It can be divided in two parts, 276 and 9021, that multiplied together give a triangular number (2489796 = T₂₂₃₁).

The spelling of 2769021 in words is "two million, seven hundred sixty-nine thousand, twenty-one".