80540072 has 48 divisors (see below), whose sum is σ = 159101820. Its totient is φ = 38205440.

The previous prime is 80540059. The next prime is 80540081. The reversal of 80540072 is 27004508.

It can be written as a sum of positive squares in 6 ways, for example, as 7396 + 80532676 = 86^2 + 8974^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712688 + ... + 712800.

Almost surely, 2^80540072 is an apocalyptic number.

80540072 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

80540072 is a deficient number, since it is larger than the sum of its proper divisors (78561748).

80540072 is a wasteful number, since it uses less digits than its factorization.

80540072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 80540072 is about 8974.4120698796. The cubic root of 80540072 is about 431.8543890829.

The spelling of 80540072 in words is "eighty million, five hundred forty thousand, seventy-two".