20299375 has 10 divisors (see below), whose sum is σ = 25366880. Its totient is φ = 16239000.

The previous prime is 20299373. The next prime is 20299381. The reversal of 20299375 is 57399202.

It is not a de Polignac number, because 20299375 - 2¹ = 20299373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20299373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15615 + ... + 16864.

It is an arithmetic number, because the mean of its divisors is an integer number (2536688).

Almost surely, 2^20299375 is an apocalyptic number.

20299375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20299375 is a deficient number, since it is larger than the sum of its proper divisors (5067505).

20299375 is an frugal number, since it uses more digits than its factorization.

20299375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32499 (or 32484 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 20299375 is about 4505.4827710247. The cubic root of 20299375 is about 272.7894407941.

The spelling of 20299375 in words is "twenty million, two hundred ninety-nine thousand, three hundred seventy-five".