20375429 has 8 divisors (see below), whose sum is σ = 22188000. Its totient is φ = 18636912.

The previous prime is 20375423. The next prime is 20375441. The reversal of 20375429 is 92457302.

It is a happy number.

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 20375429 - 2⁴ = 20375413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20375395 and 20375404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20375423) 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, 17939 + ... + 19040.

It is an arithmetic number, because the mean of its divisors is an integer number (2773500).

Almost surely, 2^20375429 is an apocalyptic number.

20375429 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20375429 is a deficient number, since it is larger than the sum of its proper divisors (1812571).

20375429 is a wasteful number, since it uses less digits than its factorization.

20375429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37027.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 20375429 is about 4513.9150412918. The cubic root of 20375429 is about 273.1296954720.

The spelling of 20375429 in words is "twenty million, three hundred seventy-five thousand, four hundred twenty-nine".