72955438 has 8 divisors (see below), whose sum is σ = 109546560. Its totient is φ = 36439920.

The previous prime is 72955427. The next prime is 72955457. The reversal of 72955438 is 83455927.

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

It is a junction number, because it is equal to n+sod(n) for n = 72955394 and 72955403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16423 + ... + 20386.

It is an arithmetic number, because the mean of its divisors is an integer number (13693320).

Almost surely, 2^72955438 is an apocalyptic number.

72955438 is a deficient number, since it is larger than the sum of its proper divisors (36591122).

72955438 is a wasteful number, since it uses less digits than its factorization.

72955438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37802.

The product of its digits is 302400, while the sum is 43.

The square root of 72955438 is about 8541.3955534210. The cubic root of 72955438 is about 417.8488613632.

The spelling of 72955438 in words is "seventy-two million, nine hundred fifty-five thousand, four hundred thirty-eight".