72351783 has 36 divisors (see below), whose sum is σ = 122176080. Its totient is φ = 41138496.

The previous prime is 72351733. The next prime is 72351787. The reversal of 72351783 is 38715327.

It is not a de Polignac number, because 72351783 - 2¹³ = 72343591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72351787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 158091 + ... + 158547.

It is an arithmetic number, because the mean of its divisors is an integer number (3393780).

Almost surely, 2^72351783 is an apocalyptic number.

72351783 is a deficient number, since it is larger than the sum of its proper divisors (49824297).

72351783 is a wasteful number, since it uses less digits than its factorization.

72351783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 826 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 72351783 is about 8505.9851281318. The cubic root of 72351783 is about 416.6931994482.

The spelling of 72351783 in words is "seventy-two million, three hundred fifty-one thousand, seven hundred eighty-three".