72187054 has 8 divisors (see below), whose sum is σ = 109133568. Its totient is φ = 35809200.

The previous prime is 72187033. The next prime is 72187057. The reversal of 72187054 is 45078127.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72187057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141847 + ... + 142354.

It is an arithmetic number, because the mean of its divisors is an integer number (13641696).

Almost surely, 2^72187054 is an apocalyptic number.

72187054 is a deficient number, since it is larger than the sum of its proper divisors (36946514).

72187054 is a wasteful number, since it uses less digits than its factorization.

72187054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284330.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 72187054 is about 8496.2964872937. The cubic root of 72187054 is about 416.3767197384.

The spelling of 72187054 in words is "seventy-two million, one hundred eighty-seven thousand, fifty-four".