20747850 has 24 divisors (see below), whose sum is σ = 51455040. Its totient is φ = 5532720.

The previous prime is 20747827. The next prime is 20747873. The reversal of 20747850 is 5874702.

It is an interprime number because it is at equal distance from previous prime (20747827) and next prime (20747873).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69010 + ... + 69309.

It is an arithmetic number, because the mean of its divisors is an integer number (2143960).

Almost surely, 2^20747850 is an apocalyptic number.

20747850 is an abundant number, since it is smaller than the sum of its proper divisors (30707190).

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

20747850 is a wasteful number, since it uses less digits than its factorization.

20747850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138334 (or 138329 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 20747850 is about 4554.9807902998. The cubic root of 20747850 is about 274.7837418263.

The spelling of 20747850 in words is "twenty million, seven hundred forty-seven thousand, eight hundred fifty".