2049621 has 24 divisors (see below), whose sum is σ = 3239424. Its totient is φ = 1149120.

The previous prime is 2049617. The next prime is 2049629. The reversal of 2049621 is 1269402.

It is not a de Polignac number, because 2049621 - 2² = 2049617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2049591 and 2049600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10636 + ... + 10826.

It is an arithmetic number, because the mean of its divisors is an integer number (134976).

2^2049621 is an apocalyptic number.

2049621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2049621 is a deficient number, since it is larger than the sum of its proper divisors (1189803).

2049621 is a wasteful number, since it uses less digits than its factorization.

2049621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2049621 is about 1431.6497476688. The cubic root of 2049621 is about 127.0255802318.

The spelling of 2049621 in words is "two million, forty-nine thousand, six hundred twenty-one".