20876349 has 16 divisors (see below), whose sum is σ = 30273152. Its totient is φ = 12719808.

The previous prime is 20876311. The next prime is 20876351. The reversal of 20876349 is 94367802.

It is not a de Polignac number, because 20876349 - 2¹³ = 20868157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20876309) 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, 1419 + ... + 6615.

It is an arithmetic number, because the mean of its divisors is an integer number (1892072).

Almost surely, 2^20876349 is an apocalyptic number.

It is an amenable number.

20876349 is a deficient number, since it is larger than the sum of its proper divisors (9396803).

20876349 is a wasteful number, since it uses less digits than its factorization.

20876349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 20876349 is about 4569.0643462311. The cubic root of 20876349 is about 275.3498533525.

The spelling of 20876349 in words is "twenty million, eight hundred seventy-six thousand, three hundred forty-nine".