73209023 has 16 divisors (see below), whose sum is σ = 78299136. Its totient is φ = 68302080.

The previous prime is 73209007. The next prime is 73209041. The reversal of 73209023 is 32090237.

It is a cyclic number.

It is not a de Polignac number, because 73209023 - 2⁴ = 73209007 is a prime.

It is a super-2 number, since 2×73209023² = 10719122097229058, 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 = 73208983 and 73209001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73209043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207215 + ... + 207567.

It is an arithmetic number, because the mean of its divisors is an integer number (4893696).

Almost surely, 2^73209023 is an apocalyptic number.

73209023 is a deficient number, since it is larger than the sum of its proper divisors (5090113).

73209023 is a wasteful number, since it uses less digits than its factorization.

73209023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 73209023 is about 8556.2271475224. The cubic root of 73209023 is about 418.3324335926.

The spelling of 73209023 in words is "seventy-three million, two hundred nine thousand, twenty-three".