72461146 has 4 divisors (see below), whose sum is σ = 108691722. Its totient is φ = 36230572.

The previous prime is 72461141. The next prime is 72461153. The reversal of 72461146 is 64116427.

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

It can be written as a sum of positive squares in only one way, i.e., 72437121 + 24025 = 8511^2 + 155^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (72461141) by changing a digit.

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 as a sum of consecutive naturals, namely, 18115285 + ... + 18115288.

Almost surely, 2^72461146 is an apocalyptic number.

72461146 is a deficient number, since it is larger than the sum of its proper divisors (36230576).

72461146 is a wasteful number, since it uses less digits than its factorization.

72461146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36230575.

The product of its digits is 8064, while the sum is 31.

The square root of 72461146 is about 8512.4112917551. The cubic root of 72461146 is about 416.9030439743.

The spelling of 72461146 in words is "seventy-two million, four hundred sixty-one thousand, one hundred forty-six".