72871814 has 4 divisors (see below), whose sum is σ = 109307724. Its totient is φ = 36435906.

The previous prime is 72871811. The next prime is 72871819. The reversal of 72871814 is 41817827.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72871811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18217952 + ... + 18217955.

It is an arithmetic number, because the mean of its divisors is an integer number (27326931).

Almost surely, 2^72871814 is an apocalyptic number.

72871814 is a deficient number, since it is larger than the sum of its proper divisors (36435910).

72871814 is a wasteful number, since it uses less digits than its factorization.

72871814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36435909.

The product of its digits is 25088, while the sum is 38.

The square root of 72871814 is about 8536.4989310607. The cubic root of 72871814 is about 417.6891494747.

The spelling of 72871814 in words is "seventy-two million, eight hundred seventy-one thousand, eight hundred fourteen".