73821144 has 16 divisors (see below), whose sum is σ = 184552920. Its totient is φ = 24607040.

The previous prime is 73821133. The next prime is 73821151. The reversal of 73821144 is 44112837.

It is a super-2 number, since 2×73821144² = 10899122602937472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537917 + ... + 1537964.

Almost surely, 2^73821144 is an apocalyptic number.

It is an amenable number.

73821144 is an abundant number, since it is smaller than the sum of its proper divisors (110731776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73821144 is a wasteful number, since it uses less digits than its factorization.

73821144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075890 (or 3075886 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 73821144 is about 8591.9231840142. The cubic root of 73821144 is about 419.4951303156.

The spelling of 73821144 in words is "seventy-three million, eight hundred twenty-one thousand, one hundred forty-four".