73028550 has 96 divisors (see below), whose sum is σ = 208772352. Its totient is φ = 16548480.

The previous prime is 73028513. The next prime is 73028561. The reversal of 73028550 is 5582037.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164629 + ... + 165071.

It is an arithmetic number, because the mean of its divisors is an integer number (2174712).

Almost surely, 2^73028550 is an apocalyptic number.

73028550 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 73028550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104386176).

73028550 is an abundant number, since it is smaller than the sum of its proper divisors (135743802).

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

73028550 is a wasteful number, since it uses less digits than its factorization.

73028550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 73028550 is about 8545.6743443686. The cubic root of 73028550 is about 417.9883966163.

The spelling of 73028550 in words is "seventy-three million, twenty-eight thousand, five hundred fifty".