2736921 has 16 divisors (see below), whose sum is σ = 4010688. Its totient is φ = 1646400.

The previous prime is 2736917. The next prime is 2736941. The reversal of 2736921 is 1296372.

It is not a de Polignac number, because 2736921 - 2² = 2736917 is a prime.

It is a super-4 number, since 4×2736921⁴ (a number of 27 digits) contains 4444 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2736911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6291 + ... + 6711.

It is an arithmetic number, because the mean of its divisors is an integer number (250668).

2^2736921 is an apocalyptic number.

It is an amenable number.

2736921 is a deficient number, since it is larger than the sum of its proper divisors (1273767).

2736921 is a wasteful number, since it uses less digits than its factorization.

2736921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its digits is 4536, while the sum is 30.

The square root of 2736921 is about 1654.3642283367. The cubic root of 2736921 is about 139.8795051661.

The spelling of 2736921 in words is "two million, seven hundred thirty-six thousand, nine hundred twenty-one".