20382746 has 4 divisors (see below), whose sum is σ = 30574122. Its totient is φ = 10191372.

The previous prime is 20382743. The next prime is 20382749. The reversal of 20382746 is 64728302.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20382743) and next prime (20382749).

It can be written as a sum of positive squares in only one way, i.e., 14326225 + 6056521 = 3785^2 + 2461^2 .

It is not an unprimeable number, because it can be changed into a prime (20382743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5095685 + ... + 5095688.

Almost surely, 2^20382746 is an apocalyptic number.

20382746 is a deficient number, since it is larger than the sum of its proper divisors (10191376).

20382746 is a wasteful number, since it uses less digits than its factorization.

20382746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191375.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20382746 is about 4514.7254623067. The cubic root of 20382746 is about 273.1623860034.

The spelling of 20382746 in words is "twenty million, three hundred eighty-two thousand, seven hundred forty-six".