72703138 has 8 divisors (see below), whose sum is σ = 113796288. Its totient is φ = 34771044.

The previous prime is 72703097. The next prime is 72703151. The reversal of 72703138 is 83130727.

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

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, 790206 + ... + 790297.

It is an arithmetic number, because the mean of its divisors is an integer number (14224536).

Almost surely, 2^72703138 is an apocalyptic number.

72703138 is a deficient number, since it is larger than the sum of its proper divisors (41093150).

72703138 is a wasteful number, since it uses less digits than its factorization.

72703138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580528.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 72703138 is about 8526.6135129956. The cubic root of 72703138 is about 417.3666262152.

The spelling of 72703138 in words is "seventy-two million, seven hundred three thousand, one hundred thirty-eight".