72787406 has 8 divisors (see below), whose sum is σ = 109222344. Its totient is φ = 36379960.

The previous prime is 72787381. The next prime is 72787417. The reversal of 72787406 is 60478727.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (13652793).

Almost surely, 2^72787406 is an apocalyptic number.

72787406 is a deficient number, since it is larger than the sum of its proper divisors (36434938).

72787406 is a wasteful number, since it uses less digits than its factorization.

72787406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13746.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 72787406 is about 8531.5535513762. The cubic root of 72787406 is about 417.5278162829.

The spelling of 72787406 in words is "seventy-two million, seven hundred eighty-seven thousand, four hundred six".