20152389 has 8 divisors (see below), whose sum is σ = 26908992. Its totient is φ = 13415360.

The previous prime is 20152381. The next prime is 20152397. The reversal of 20152389 is 98325102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20152381) and next prime (20152397).

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

It is a cyclic number.

It is not a de Polignac number, because 20152389 - 2³ = 20152381 is a prime.

It is a super-2 number, since 2×20152389² = 812237564814642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152381) 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, 2292 + ... + 6749.

It is an arithmetic number, because the mean of its divisors is an integer number (3363624).

Almost surely, 2^20152389 is an apocalyptic number.

It is an amenable number.

20152389 is a deficient number, since it is larger than the sum of its proper divisors (6756603).

20152389 is an equidigital number, since it uses as much as digits as its factorization.

20152389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9787.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20152389 is about 4489.1412319062. The cubic root of 20152389 is about 272.1294303634.

The spelling of 20152389 in words is "twenty million, one hundred fifty-two thousand, three hundred eighty-nine".