72351430 has 16 divisors (see below), whose sum is σ = 137087280. Its totient is φ = 27417312.

The previous prime is 72351421. The next prime is 72351437. The reversal of 72351430 is 3415327.

It is a junction number, because it is equal to n+sod(n) for n = 72351395 and 72351404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72351437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190209 + ... + 190588.

It is an arithmetic number, because the mean of its divisors is an integer number (8567955).

Almost surely, 2^72351430 is an apocalyptic number.

72351430 is a deficient number, since it is larger than the sum of its proper divisors (64735850).

72351430 is a wasteful number, since it uses less digits than its factorization.

72351430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380823.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 72351430 is about 8505.9643780115. The cubic root of 72351430 is about 416.6925217734.

Adding to 72351430 its reverse (3415327), we get a palindrome (75766757).

The spelling of 72351430 in words is "seventy-two million, three hundred fifty-one thousand, four hundred thirty".