72473455 has 8 divisors (see below), whose sum is σ = 87014304. Its totient is φ = 57948000.

The previous prime is 72473413. The next prime is 72473461. The reversal of 72473455 is 55437427.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72473455 - 2⁷ = 72473327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14310 + ... + 18700.

It is an arithmetic number, because the mean of its divisors is an integer number (10876788).

Almost surely, 2^72473455 is an apocalyptic number.

72473455 is a deficient number, since it is larger than the sum of its proper divisors (14540849).

72473455 is a wasteful number, since it uses less digits than its factorization.

72473455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7697.

The product of its digits is 117600, while the sum is 37.

The square root of 72473455 is about 8513.1342641826. The cubic root of 72473455 is about 416.9266491259.

The spelling of 72473455 in words is "seventy-two million, four hundred seventy-three thousand, four hundred fifty-five".