72343455 has 16 divisors (see below), whose sum is σ = 115984224. Its totient is φ = 38504960.

The previous prime is 72343433. The next prime is 72343457. The reversal of 72343455 is 55434327.

It is not a de Polignac number, because 72343455 - 2⁵ = 72343423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72343457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3187 + ... + 12443.

It is an arithmetic number, because the mean of its divisors is an integer number (7249014).

Almost surely, 2^72343455 is an apocalyptic number.

72343455 is a deficient number, since it is larger than the sum of its proper divisors (43640769).

72343455 is a wasteful number, since it uses less digits than its factorization.

72343455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9786.

The product of its digits is 50400, while the sum is 33.

The square root of 72343455 is about 8505.4955763906. The cubic root of 72343455 is about 416.6772111109.

The spelling of 72343455 in words is "seventy-two million, three hundred forty-three thousand, four hundred fifty-five".