20772395 has 8 divisors (see below), whose sum is σ = 28487904. Its totient is φ = 14243904.

The previous prime is 20772383. The next prime is 20772403. The reversal of 20772395 is 59327702.

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 20772395 - 2¹⁰ = 20771371 is a prime.

It is a super-4 number, since 4×20772395⁴ (a number of 30 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 593497 = 20772395 / (2 + 0 + 7 + 7 + 2 + 3 + 9 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296714 + ... + 296783.

It is an arithmetic number, because the mean of its divisors is an integer number (3560988).

Almost surely, 2^20772395 is an apocalyptic number.

20772395 is a deficient number, since it is larger than the sum of its proper divisors (7715509).

20772395 is an equidigital number, since it uses as much as digits as its factorization.

20772395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593509.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 20772395 is about 4557.6742972705. The cubic root of 20772395 is about 274.8920568092.

The spelling of 20772395 in words is "twenty million, seven hundred seventy-two thousand, three hundred ninety-five".