72345351 has 24 divisors (see below), whose sum is σ = 107844096. Its totient is φ = 43074720.

The previous prime is 72345349. The next prime is 72345367. The reversal of 72345351 is 15354327.

It is not a de Polignac number, because 72345351 - 2¹ = 72345349 is a prime.

It is a super-2 number, since 2×72345351² = 10467699622626402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72344351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13416 + ... + 18018.

It is an arithmetic number, because the mean of its divisors is an integer number (4493504).

Almost surely, 2^72345351 is an apocalyptic number.

72345351 is a deficient number, since it is larger than the sum of its proper divisors (35498745).

72345351 is a wasteful number, since it uses less digits than its factorization.

72345351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4663 (or 4650 counting only the distinct ones).

The product of its digits is 12600, while the sum is 30.

The square root of 72345351 is about 8505.6070330106. The cubic root of 72345351 is about 416.6808512149.

Adding to 72345351 its reverse (15354327), we get a palindrome (87699678).

The spelling of 72345351 in words is "seventy-two million, three hundred forty-five thousand, three hundred fifty-one".