73013426 has 4 divisors (see below), whose sum is σ = 109520142. Its totient is φ = 36506712.

The previous prime is 73013417. The next prime is 73013467. The reversal of 73013426 is 62431037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62431037 = 137 ⋅455701.

It can be written as a sum of positive squares in only one way, i.e., 67486225 + 5527201 = 8215^2 + 2351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73013395 and 73013404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18253355 + ... + 18253358.

Almost surely, 2^73013426 is an apocalyptic number.

73013426 is a deficient number, since it is larger than the sum of its proper divisors (36506716).

73013426 is a wasteful number, since it uses less digits than its factorization.

73013426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36506715.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 73013426 is about 8544.7894064161. The cubic root of 73013426 is about 417.9595398977.

The spelling of 73013426 in words is "seventy-three million, thirteen thousand, four hundred twenty-six".