73028531 has 4 divisors (see below), whose sum is σ = 73045872. Its totient is φ = 73011192.

The previous prime is 73028513. The next prime is 73028561. The reversal of 73028531 is 13582037.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73028531 is a prime.

It is a super-2 number, since 2×73028531² = 10666332680035922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73028494 and 73028503.

It is not an unprimeable number, because it can be changed into a prime (73028561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2141 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (18261468).

Almost surely, 2^73028531 is an apocalyptic number.

73028531 is a deficient number, since it is larger than the sum of its proper divisors (17341).

73028531 is a wasteful number, since it uses less digits than its factorization.

73028531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17340.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 73028531 is about 8545.6732326950. The cubic root of 73028531 is about 417.9883603667.

The spelling of 73028531 in words is "seventy-three million, twenty-eight thousand, five hundred thirty-one".