72349187 has 4 divisors (see below), whose sum is σ = 73714320. Its totient is φ = 70984056.

The previous prime is 72349183. The next prime is 72349201. The reversal of 72349187 is 78194327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72349187 - 2² = 72349183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72349183) 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, 682487 + ... + 682592.

It is an arithmetic number, because the mean of its divisors is an integer number (18428580).

Almost surely, 2^72349187 is an apocalyptic number.

72349187 is a deficient number, since it is larger than the sum of its proper divisors (1365133).

72349187 is a wasteful number, since it uses less digits than its factorization.

72349187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365132.

The product of its digits is 84672, while the sum is 41.

The square root of 72349187 is about 8505.8325283302. The cubic root of 72349187 is about 416.6882157033.

The spelling of 72349187 in words is "seventy-two million, three hundred forty-nine thousand, one hundred eighty-seven".