73678538 has 4 divisors (see below), whose sum is σ = 110517810. Its totient is φ = 36839268.

The previous prime is 73678511. The next prime is 73678543. The reversal of 73678538 is 83587637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 68674369 + 5004169 = 8287^2 + 2237^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73678492 and 73678501.

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 as a sum of consecutive naturals, namely, 18419633 + ... + 18419636.

Almost surely, 2^73678538 is an apocalyptic number.

73678538 is a deficient number, since it is larger than the sum of its proper divisors (36839272).

73678538 is a wasteful number, since it uses less digits than its factorization.

73678538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36839271.

The product of its digits is 846720, while the sum is 47.

The square root of 73678538 is about 8583.6203317714. The cubic root of 73678538 is about 419.2248324851.

Subtracting 73678538 from its reverse (83587637), we obtain a palindrome (9909099).

The spelling of 73678538 in words is "seventy-three million, six hundred seventy-eight thousand, five hundred thirty-eight".