19772135 has 8 divisors (see below), whose sum is σ = 23750496. Its totient is φ = 15801760.

The previous prime is 19772069. The next prime is 19772149. The reversal of 19772135 is 53127791.

It is a happy number.

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

It is not a de Polignac number, because 19772135 - 2⁸ = 19771879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19772095 and 19772104.

It is a congruent 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, 8165 + ... + 10305.

It is an arithmetic number, because the mean of its divisors is an integer number (2968812).

Almost surely, 2^19772135 is an apocalyptic number.

19772135 is a deficient number, since it is larger than the sum of its proper divisors (3978361).

19772135 is a wasteful number, since it uses less digits than its factorization.

19772135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993.

The product of its digits is 13230, while the sum is 35.

The square root of 19772135 is about 4446.5868933374. The cubic root of 19772135 is about 270.4069537604.

The spelling of 19772135 in words is "nineteen million, seven hundred seventy-two thousand, one hundred thirty-five".