71149998 has 32 divisors (see below), whose sum is σ = 152028576. Its totient is φ = 22120448.

The previous prime is 71149987. The next prime is 71149999. The reversal of 71149998 is 89994117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71149999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8440 + ... + 14612.

It is an arithmetic number, because the mean of its divisors is an integer number (4750893).

Almost surely, 2^71149998 is an apocalyptic number.

71149998 is an abundant number, since it is smaller than the sum of its proper divisors (80878578).

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

71149998 is a wasteful number, since it uses less digits than its factorization.

71149998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308.

The product of its digits is 163296, while the sum is 48.

The square root of 71149998 is about 8435.0458208595. The cubic root of 71149998 is about 414.3731728272.

The spelling of 71149998 in words is "seventy-one million, one hundred forty-nine thousand, nine hundred ninety-eight".