20702427 has 8 divisors (see below), whose sum is σ = 27673680. Its totient is φ = 13766400.

The previous prime is 20702411. The next prime is 20702443. The reversal of 20702427 is 72420702.

It is an interprime number because it is at equal distance from previous prime (20702411) and next prime (20702443).

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

It is not a de Polignac number, because 20702427 - 2⁴ = 20702411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20702397 and 20702406.

It is not an unprimeable number, because it can be changed into a prime (20702477) 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, 7402 + ... + 9807.

It is an arithmetic number, because the mean of its divisors is an integer number (3459210).

Almost surely, 2^20702427 is an apocalyptic number.

20702427 is a deficient number, since it is larger than the sum of its proper divisors (6971253).

20702427 is a wasteful number, since it uses less digits than its factorization.

20702427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17613.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20702427 is about 4549.9919780149. The cubic root of 20702427 is about 274.5830684790.

The spelling of 20702427 in words is "twenty million, seven hundred two thousand, four hundred twenty-seven".