72372340 has 24 divisors (see below), whose sum is σ = 152570880. Its totient is φ = 28836768.

The previous prime is 72372323. The next prime is 72372341. The reversal of 72372340 is 4327327.

It is a junction number, because it is equal to n+sod(n) for n = 72372299 and 72372308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72372341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1620 + ... + 12139.

It is an arithmetic number, because the mean of its divisors is an integer number (6357120).

Almost surely, 2^72372340 is an apocalyptic number.

It is an amenable number.

72372340 is an abundant number, since it is smaller than the sum of its proper divisors (80198540).

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

72372340 is a wasteful number, since it uses less digits than its factorization.

72372340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14031 (or 14029 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 72372340 is about 8507.1934267419. The cubic root of 72372340 is about 416.7326601249.

Adding to 72372340 its reverse (4327327), we get a palindrome (76699667).

The spelling of 72372340 in words is "seventy-two million, three hundred seventy-two thousand, three hundred forty".