72849146 has 4 divisors (see below), whose sum is σ = 109273722. Its totient is φ = 36424572.

The previous prime is 72849137. The next prime is 72849149. The reversal of 72849146 is 64194827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64194827 = 727 ⋅88301.

It can be written as a sum of positive squares in only one way, i.e., 64176121 + 8673025 = 8011^2 + 2945^2 .

It is not an unprimeable number, because it can be changed into a prime (72849149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18212285 + ... + 18212288.

Almost surely, 2^72849146 is an apocalyptic number.

72849146 is a deficient number, since it is larger than the sum of its proper divisors (36424576).

72849146 is a wasteful number, since it uses less digits than its factorization.

72849146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36424575.

The product of its digits is 96768, while the sum is 41.

The square root of 72849146 is about 8535.1711172067. The cubic root of 72849146 is about 417.6458352446.

The spelling of 72849146 in words is "seventy-two million, eight hundred forty-nine thousand, one hundred forty-six".