73983780 has 144 divisors (see below), whose sum is σ = 250845504. Its totient is φ = 18195840.

The previous prime is 73983769. The next prime is 73983799. The reversal of 73983780 is 8738937.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62595 + ... + 63765.

Almost surely, 2^73983780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73983780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125422752).

73983780 is an abundant number, since it is smaller than the sum of its proper divisors (176861724).

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

73983780 is a wasteful number, since it uses less digits than its factorization.

73983780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 73983780 is about 8601.3824470256. The cubic root of 73983780 is about 419.8029688073.

The spelling of 73983780 in words is "seventy-three million, nine hundred eighty-three thousand, seven hundred eighty".