72851734 has 4 divisors (see below), whose sum is σ = 109277604. Its totient is φ = 36425866.

The previous prime is 72851717. The next prime is 72851743. The reversal of 72851734 is 43715827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43715827 = 19 ⋅2300833.

It is a junction number, because it is equal to n+sod(n) for n = 72851693 and 72851702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18212932 + ... + 18212935.

It is an arithmetic number, because the mean of its divisors is an integer number (27319401).

Almost surely, 2^72851734 is an apocalyptic number.

72851734 is a deficient number, since it is larger than the sum of its proper divisors (36425870).

72851734 is a wasteful number, since it uses less digits than its factorization.

72851734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36425869.

The product of its digits is 47040, while the sum is 37.

The square root of 72851734 is about 8535.3227238342. The cubic root of 72851734 is about 417.6507808740.

The spelling of 72851734 in words is "seventy-two million, eight hundred fifty-one thousand, seven hundred thirty-four".