73420810 has 8 divisors (see below), whose sum is σ = 132157476. Its totient is φ = 29368320.

The previous prime is 73420801. The next prime is 73420829. The reversal of 73420810 is 1802437.

It can be written as a sum of positive squares in 2 ways, for example, as 66275881 + 7144929 = 8141^2 + 2673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×73420810² = 10781230682112200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3671031 + ... + 3671050.

Almost surely, 2^73420810 is an apocalyptic number.

73420810 is a deficient number, since it is larger than the sum of its proper divisors (58736666).

73420810 is a wasteful number, since it uses less digits than its factorization.

73420810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342088.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 73420810 is about 8568.5944004837. The cubic root of 73420810 is about 418.7354443593.

The spelling of 73420810 in words is "seventy-three million, four hundred twenty thousand, eight hundred ten".