72150769 has 4 divisors (see below), whose sum is σ = 72417280. Its totient is φ = 71884260.

The previous prime is 72150761. The next prime is 72150773. The reversal of 72150769 is 96705127.

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: 96705127 = 109 ⋅887203.

It is a cyclic number.

It is not a de Polignac number, because 72150769 - 2³ = 72150761 is a prime.

It is a super-2 number, since 2×72150769² = 10411466934582722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72150761) 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, 132849 + ... + 133390.

It is an arithmetic number, because the mean of its divisors is an integer number (18104320).

Almost surely, 2^72150769 is an apocalyptic number.

It is an amenable number.

72150769 is a deficient number, since it is larger than the sum of its proper divisors (266511).

72150769 is a wasteful number, since it uses less digits than its factorization.

72150769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266510.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 72150769 is about 8494.1608767435. The cubic root of 72150769 is about 416.3069437858.

The spelling of 72150769 in words is "seventy-two million, one hundred fifty thousand, seven hundred sixty-nine".