72748853 has 4 divisors (see below), whose sum is σ = 76577760. Its totient is φ = 68919948.

The previous prime is 72748817. The next prime is 72748861. The reversal of 72748853 is 35884727.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35884727 = 1151 ⋅31177.

It is a cyclic number.

It is not a de Polignac number, because 72748853 - 2⁶ = 72748789 is a prime.

It is a super-2 number, since 2×72748853² = 10584791225631218, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72748813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914425 + ... + 1914462.

It is an arithmetic number, because the mean of its divisors is an integer number (19144440).

Almost surely, 2^72748853 is an apocalyptic number.

It is an amenable number.

72748853 is a deficient number, since it is larger than the sum of its proper divisors (3828907).

72748853 is a wasteful number, since it uses less digits than its factorization.

72748853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828906.

The product of its digits is 376320, while the sum is 44.

The square root of 72748853 is about 8529.2938160202. The cubic root of 72748853 is about 417.4540865283.

The spelling of 72748853 in words is "seventy-two million, seven hundred forty-eight thousand, eight hundred fifty-three".