73880028 has 72 divisors (see below), whose sum is σ = 201080880. Its totient is φ = 22786560.

The previous prime is 73880017. The next prime is 73880087. The reversal of 73880028 is 82008837.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 73879974 and 73880001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36343 + ... + 38321.

It is an arithmetic number, because the mean of its divisors is an integer number (2792790).

Almost surely, 2^73880028 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 73880028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100540440).

73880028 is an abundant number, since it is smaller than the sum of its proper divisors (127200852).

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

73880028 is a wasteful number, since it uses less digits than its factorization.

73880028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 73880028 is about 8595.3492075657. The cubic root of 73880028 is about 419.6066385052.

The spelling of 73880028 in words is "seventy-three million, eight hundred eighty thousand, twenty-eight".