72851406 has 8 divisors (see below), whose sum is σ = 145702824. Its totient is φ = 24283800.

The previous prime is 72851399. The next prime is 72851437. The reversal of 72851406 is 60415827.

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

72851406 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6070945 + ... + 6070956.

It is an arithmetic number, because the mean of its divisors is an integer number (18212853).

Almost surely, 2^72851406 is an apocalyptic number.

72851406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72851406 is a wasteful number, since it uses less digits than its factorization.

72851406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12141906.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 72851406 is about 8535.3035095420. The cubic root of 72851406 is about 417.6501540774.

The spelling of 72851406 in words is "seventy-two million, eight hundred fifty-one thousand, four hundred six".