72703426 has 8 divisors (see below), whose sum is σ = 109572624. Its totient is φ = 36179220.

The previous prime is 72703381. The next prime is 72703447. The reversal of 72703426 is 62430727.

It is a happy number.

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

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, 85720 + ... + 86563.

It is an arithmetic number, because the mean of its divisors is an integer number (13696578).

Almost surely, 2^72703426 is an apocalyptic number.

72703426 is a deficient number, since it is larger than the sum of its proper divisors (36869198).

72703426 is a wasteful number, since it uses less digits than its factorization.

72703426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172496.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 72703426 is about 8526.6304012781. The cubic root of 72703426 is about 417.3671773213.

The spelling of 72703426 in words is "seventy-two million, seven hundred three thousand, four hundred twenty-six".