20906348 has 6 divisors (see below), whose sum is σ = 36586116. Its totient is φ = 10453172.

The previous prime is 20906341. The next prime is 20906371. The reversal of 20906348 is 84360902.

It is not an unprimeable number, because it can be changed into a prime (20906341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2613290 + ... + 2613297.

It is an arithmetic number, because the mean of its divisors is an integer number (6097686).

Almost surely, 2^20906348 is an apocalyptic number.

It is an amenable number.

20906348 is a deficient number, since it is larger than the sum of its proper divisors (15679768).

20906348 is a wasteful number, since it uses less digits than its factorization.

20906348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226591 (or 5226589 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20906348 is about 4572.3460061548. The cubic root of 20906348 is about 275.4816814291.

The spelling of 20906348 in words is "twenty million, nine hundred six thousand, three hundred forty-eight".