20046387 has 8 divisors (see below), whose sum is σ = 28135360. Its totient is φ = 12660840.

The previous prime is 20046373. The next prime is 20046401. The reversal of 20046387 is 78364002.

It is an interprime number because it is at equal distance from previous prime (20046373) and next prime (20046401).

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

It is a de Polignac number, because none of the positive numbers 2^k-20046387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20046347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175789 + ... + 175902.

It is an arithmetic number, because the mean of its divisors is an integer number (3516920).

Almost surely, 2^20046387 is an apocalyptic number.

20046387 is a deficient number, since it is larger than the sum of its proper divisors (8088973).

20046387 is a wasteful number, since it uses less digits than its factorization.

20046387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351713.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20046387 is about 4477.3191755782. The cubic root of 20046387 is about 271.6514557749.

The spelling of 20046387 in words is "twenty million, forty-six thousand, three hundred eighty-seven".