72031850 has 96 divisors (see below), whose sum is σ = 157757760. Its totient is φ = 24192000.

The previous prime is 72031849. The next prime is 72031877. The reversal of 72031850 is 5813027.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 637394 + ... + 637506.

It is an arithmetic number, because the mean of its divisors is an integer number (1643310).

Almost surely, 2^72031850 is an apocalyptic number.

72031850 is an abundant number, since it is smaller than the sum of its proper divisors (85725910).

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

72031850 is a wasteful number, since it uses less digits than its factorization.

72031850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 72031850 is about 8487.1579459793. The cubic root of 72031850 is about 416.0780987801.

Adding to 72031850 its reverse (5813027), we get a palindrome (77844877).

The spelling of 72031850 in words is "seventy-two million, thirty-one thousand, eight hundred fifty".