72687190 has 16 divisors (see below), whose sum is σ = 132308640. Its totient is φ = 28747840.

The previous prime is 72687169. The next prime is 72687191. The reversal of 72687190 is 9178627.

It is a super-2 number, since 2×72687190² = 10566855180192200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72687191) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39946 + ... + 41725.

It is an arithmetic number, because the mean of its divisors is an integer number (8269290).

Almost surely, 2^72687190 is an apocalyptic number.

72687190 is a deficient number, since it is larger than the sum of its proper divisors (59621450).

72687190 is a wasteful number, since it uses less digits than its factorization.

72687190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81767.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 72687190 is about 8525.6782721376. The cubic root of 72687190 is about 417.3361064427.

The spelling of 72687190 in words is "seventy-two million, six hundred eighty-seven thousand, one hundred ninety".