71802049 has 8 divisors (see below), whose sum is σ = 78396480. Its totient is φ = 65218800.

The previous prime is 71802047. The next prime is 71802077. The reversal of 71802049 is 94020817.

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

It is a cyclic number.

It is not a de Polignac number, because 71802049 - 2¹ = 71802047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71802049.

It is not an unprimeable number, because it can be changed into a prime (71802043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16404 + ... + 20314.

It is an arithmetic number, because the mean of its divisors is an integer number (9799560).

Almost surely, 2^71802049 is an apocalyptic number.

It is an amenable number.

71802049 is a deficient number, since it is larger than the sum of its proper divisors (6594431).

71802049 is a wasteful number, since it uses less digits than its factorization.

71802049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 71802049 is about 8473.6089713888. The cubic root of 71802049 is about 415.6351603524.

It can be divided in two parts, 7180 and 2049, that added together give a palindrome (9229).

The spelling of 71802049 in words is "seventy-one million, eight hundred two thousand, forty-nine".