71804484 has 18 divisors (see below), whose sum is σ = 181505870. Its totient is φ = 23934816.

The previous prime is 71804483. The next prime is 71804521. The reversal of 71804484 is 48440817.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 52881984 + 18922500 = 7272^2 + 4350^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1994569 = 71804484 / (7 + 1 + 8 + 0 + 4 + 4 + 8 + 4).

It is not an unprimeable number, because it can be changed into a prime (71804483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 997249 + ... + 997320.

Almost surely, 2^71804484 is an apocalyptic number.

It is an amenable number.

71804484 is an abundant number, since it is smaller than the sum of its proper divisors (109701386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71804484 is a wasteful number, since it uses less digits than its factorization.

71804484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994579 (or 1994574 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 71804484 is about 8473.7526515706. The cubic root of 71804484 is about 415.6398587335.

It can be divided in two parts, 7180 and 4484, that added together give a square (11664 = 108²).

The spelling of 71804484 in words is "seventy-one million, eight hundred four thousand, four hundred eighty-four".