78280573 has 8 divisors (see below), whose sum is σ = 90469440. Its totient is φ = 66343200.

The previous prime is 78280571. The next prime is 78280591. The reversal of 78280573 is 37508287.

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

It is not a de Polignac number, because 78280573 - 2¹ = 78280571 is a prime.

It is a super-2 number, since 2×78280573² = 12255696218416658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78280571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62203 + ... + 63448.

It is an arithmetic number, because the mean of its divisors is an integer number (11308680).

Almost surely, 2^78280573 is an apocalyptic number.

It is an amenable number.

78280573 is a deficient number, since it is larger than the sum of its proper divisors (12188867).

78280573 is a wasteful number, since it uses less digits than its factorization.

78280573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125747.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 78280573 is about 8847.6309258468. The cubic root of 78280573 is about 427.7775596833. Note that the first 3 decimals are identical.

The spelling of 78280573 in words is "seventy-eight million, two hundred eighty thousand, five hundred seventy-three".