73149147 has 12 divisors (see below), whose sum is σ = 111875400. Its totient is φ = 45897408.

The previous prime is 73149143. The next prime is 73149157. The reversal of 73149147 is 74194137.

It is not a de Polignac number, because 73149147 - 2² = 73149143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73149143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238897 + ... + 239202.

It is an arithmetic number, because the mean of its divisors is an integer number (9322950).

Almost surely, 2^73149147 is an apocalyptic number.

73149147 is a deficient number, since it is larger than the sum of its proper divisors (38726253).

73149147 is a wasteful number, since it uses less digits than its factorization.

73149147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478122 (or 478119 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 73149147 is about 8552.7274597055. The cubic root of 73149147 is about 418.2183542819.

It can be divided in two parts, 7314 and 9147, that added together give a palindrome (16461).

The spelling of 73149147 in words is "seventy-three million, one hundred forty-nine thousand, one hundred forty-seven".