73820137 has 12 divisors (see below), whose sum is σ = 78911280. Its totient is φ = 69041216.

The previous prime is 73820119. The next prime is 73820177. The reversal of 73820137 is 73102837.

It is not a de Polignac number, because 73820137 - 2²³ = 65431529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73820099 and 73820108.

It is not an unprimeable number, because it can be changed into a prime (73820177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51018 + ... + 52444.

It is an arithmetic number, because the mean of its divisors is an integer number (6575940).

Almost surely, 2^73820137 is an apocalyptic number.

It is an amenable number.

73820137 is a deficient number, since it is larger than the sum of its proper divisors (5091143).

73820137 is a wasteful number, since it uses less digits than its factorization.

73820137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 73820137 is about 8591.8645822662. The cubic root of 73820137 is about 419.4932228516.

The spelling of 73820137 in words is "seventy-three million, eight hundred twenty thousand, one hundred thirty-seven".