72345030 has 32 divisors (see below), whose sum is σ = 183842784. Its totient is φ = 18157056.

The previous prime is 72345029. The next prime is 72345071. The reversal of 72345030 is 3054327.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70417 + ... + 71436.

It is an arithmetic number, because the mean of its divisors is an integer number (5745087).

Almost surely, 2^72345030 is an apocalyptic number.

72345030 is an abundant number, since it is smaller than the sum of its proper divisors (111497754).

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

72345030 is a wasteful number, since it uses less digits than its factorization.

72345030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141880.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 72345030 is about 8505.5881630843. The cubic root of 72345030 is about 416.6802349359.

Adding to 72345030 its reverse (3054327), we get a palindrome (75399357).

It can be divided in two parts, 723 and 45030, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 72345030 in words is "seventy-two million, three hundred forty-five thousand, thirty".