20751482 has 8 divisors (see below), whose sum is σ = 31211796. Its totient is φ = 10347552.

The previous prime is 20751481. The next prime is 20751517. The reversal of 20751482 is 28415702.

It can be written as a sum of positive squares in 2 ways, for example, as 20693401 + 58081 = 4549^2 + 241^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20751481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13163 + ... + 14654.

Almost surely, 2^20751482 is an apocalyptic number.

20751482 is a deficient number, since it is larger than the sum of its proper divisors (10460314).

20751482 is a wasteful number, since it uses less digits than its factorization.

20751482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28192.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 20751482 is about 4555.3794573010. The cubic root of 20751482 is about 274.7997749144.

The spelling of 20751482 in words is "twenty million, seven hundred fifty-one thousand, four hundred eighty-two".