72544246 has 4 divisors (see below), whose sum is σ = 108816372. Its totient is φ = 36272122.

The previous prime is 72544243. The next prime is 72544249. The reversal of 72544246 is 64244527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64244527 = 1871 ⋅34337.

It is an interprime number because it is at equal distance from previous prime (72544243) and next prime (72544249).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72544243) 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 as a sum of consecutive naturals, namely, 18136060 + ... + 18136063.

It is an arithmetic number, because the mean of its divisors is an integer number (27204093).

Almost surely, 2^72544246 is an apocalyptic number.

72544246 is a deficient number, since it is larger than the sum of its proper divisors (36272126).

72544246 is a wasteful number, since it uses less digits than its factorization.

72544246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36272125.

The product of its digits is 53760, while the sum is 34.

The square root of 72544246 is about 8517.2910012515. The cubic root of 72544246 is about 417.0623542141.

The spelling of 72544246 in words is "seventy-two million, five hundred forty-four thousand, two hundred forty-six".