73866838 has 16 divisors (see below), whose sum is σ = 113210784. Its totient is φ = 36137920.

The previous prime is 73866833. The next prime is 73866841. The reversal of 73866838 is 83866837.

It is a happy number.

It is a super-2 number, since 2×73866838² = 10912619512236488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73866791 and 73866800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73866833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17556 + ... + 21352.

It is an arithmetic number, because the mean of its divisors is an integer number (7075674).

Almost surely, 2^73866838 is an apocalyptic number.

73866838 is a deficient number, since it is larger than the sum of its proper divisors (39343946).

73866838 is a wasteful number, since it uses less digits than its factorization.

73866838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007.

The product of its digits is 1161216, while the sum is 49.

The square root of 73866838 is about 8594.5818979168. The cubic root of 73866838 is about 419.5816658519.

Subtracting 73866838 from its reverse (83866837), we obtain a palindrome (9999999).

It can be divided in two parts, 738 and 66838, that added together give a palindrome (67576).

The spelling of 73866838 in words is "seventy-three million, eight hundred sixty-six thousand, eight hundred thirty-eight".