71943480 has 96 divisors (see below), whose sum is σ = 267228000. Its totient is φ = 16443648.

The previous prime is 71943457. The next prime is 71943491. The reversal of 71943480 is 8434917.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11755 + ... + 16794.

It is an arithmetic number, because the mean of its divisors is an integer number (2783625).

Almost surely, 2^71943480 is an apocalyptic number.

71943480 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71943480 is an abundant number, since it is smaller than the sum of its proper divisors (195284520).

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

71943480 is a wasteful number, since it uses less digits than its factorization.

71943480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28573 (or 28566 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 71943480 is about 8481.9502474372. The cubic root of 71943480 is about 415.9078783934.

The spelling of 71943480 in words is "seventy-one million, nine hundred forty-three thousand, four hundred eighty".