72861733 has 4 divisors (see below), whose sum is σ = 83270560. Its totient is φ = 62452908.

The previous prime is 72861709. The next prime is 72861739. The reversal of 72861733 is 33716827.

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.

It is not a de Polignac number, because 72861733 - 2¹³ = 72853541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72861692 and 72861701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72861739) 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, 5204403 + ... + 5204416.

It is an arithmetic number, because the mean of its divisors is an integer number (20817640).

Almost surely, 2^72861733 is an apocalyptic number.

It is an amenable number.

72861733 is a deficient number, since it is larger than the sum of its proper divisors (10408827).

72861733 is a wasteful number, since it uses less digits than its factorization.

72861733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10408826.

The product of its digits is 42336, while the sum is 37.

The square root of 72861733 is about 8535.9084460882. The cubic root of 72861733 is about 417.6698877132.

The spelling of 72861733 in words is "seventy-two million, eight hundred sixty-one thousand, seven hundred thirty-three".