72563146 has 8 divisors (see below), whose sum is σ = 109639620. Its totient is φ = 36016608.

The previous prime is 72563131. The next prime is 72563167. The reversal of 72563146 is 64136527.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72437121 + 126025 = 8511^2 + 355^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 132141 + ... + 132688.

Almost surely, 2^72563146 is an apocalyptic number.

72563146 is a deficient number, since it is larger than the sum of its proper divisors (37076474).

72563146 is a wasteful number, since it uses less digits than its factorization.

72563146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264968.

The product of its digits is 30240, while the sum is 34.

The square root of 72563146 is about 8518.4004367017. The cubic root of 72563146 is about 417.0985702454.

The spelling of 72563146 in words is "seventy-two million, five hundred sixty-three thousand, one hundred forty-six".