20750486 has 8 divisors (see below), whose sum is σ = 32199120. Its totient is φ = 10017448.

The previous prime is 20750479. The next prime is 20750537. The reversal of 20750486 is 68405702.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178826 + ... + 178941.

It is an arithmetic number, because the mean of its divisors is an integer number (4024890).

Almost surely, 2^20750486 is an apocalyptic number.

20750486 is a deficient number, since it is larger than the sum of its proper divisors (11448634).

20750486 is a wasteful number, since it uses less digits than its factorization.

20750486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357798.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 20750486 is about 4555.2701346901. The cubic root of 20750486 is about 274.7953783617.

The spelling of 20750486 in words is "twenty million, seven hundred fifty thousand, four hundred eighty-six".