72048427 has 4 divisors (see below), whose sum is σ = 78598296. Its totient is φ = 65498560.

The previous prime is 72048421. The next prime is 72048463. The reversal of 72048427 is 72484027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72048427 - 2³ = 72048419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72048392 and 72048401.

It is not an unprimeable number, because it can be changed into a prime (72048421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3274918 + ... + 3274939.

It is an arithmetic number, because the mean of its divisors is an integer number (19649574).

Almost surely, 2^72048427 is an apocalyptic number.

72048427 is a deficient number, since it is larger than the sum of its proper divisors (6549869).

72048427 is a wasteful number, since it uses less digits than its factorization.

72048427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6549868.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 72048427 is about 8488.1344829120. The cubic root of 72048427 is about 416.1100142804.

Subtracting 72048427 from its reverse (72484027), we obtain a square (435600 = 660²).

The spelling of 72048427 in words is "seventy-two million, forty-eight thousand, four hundred twenty-seven".