20747486 has 8 divisors (see below), whose sum is σ = 31708584. Its totient is φ = 10177960.

The previous prime is 20747483. The next prime is 20747501. The reversal of 20747486 is 68474702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20747483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97760 + ... + 97971.

It is an arithmetic number, because the mean of its divisors is an integer number (3963573).

Almost surely, 2^20747486 is an apocalyptic number.

20747486 is a deficient number, since it is larger than the sum of its proper divisors (10961098).

20747486 is a wasteful number, since it uses less digits than its factorization.

20747486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195786.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 20747486 is about 4554.9408338638. The cubic root of 20747486 is about 274.7821348828.

The spelling of 20747486 in words is "twenty million, seven hundred forty-seven thousand, four hundred eighty-six".