20876742 has 24 divisors (see below), whose sum is σ = 46197216. Its totient is φ = 6810576.

The previous prime is 20876699. The next prime is 20876743. The reversal of 20876742 is 24767802.

It is a junction number, because it is equal to n+sod(n) for n = 20876697 and 20876706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20876743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11493 + ... + 13184.

It is an arithmetic number, because the mean of its divisors is an integer number (1924884).

Almost surely, 2^20876742 is an apocalyptic number.

20876742 is an abundant number, since it is smaller than the sum of its proper divisors (25320474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20876742 is a wasteful number, since it uses less digits than its factorization.

20876742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24732 (or 24729 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 20876742 is about 4569.1073526456. The cubic root of 20876742 is about 275.3515811740.

The spelling of 20876742 in words is "twenty million, eight hundred seventy-six thousand, seven hundred forty-two".