78453488 has 20 divisors (see below), whose sum is σ = 153204480. Its totient is φ = 38916864.

The previous prime is 78453469. The next prime is 78453491. The reversal of 78453488 is 88435487.

It is a super-2 number, since 2×78453488² = 12309899558732288, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 17273 + ... + 21336.

It is an arithmetic number, because the mean of its divisors is an integer number (7660224).

Almost surely, 2^78453488 is an apocalyptic number.

It is an amenable number.

78453488 is a deficient number, since it is larger than the sum of its proper divisors (74750992).

78453488 is a wasteful number, since it uses less digits than its factorization.

78453488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38744 (or 38738 counting only the distinct ones).

The product of its digits is 860160, while the sum is 47.

The square root of 78453488 is about 8857.3973603988. The cubic root of 78453488 is about 428.0923025662.

The spelling of 78453488 in words is "seventy-eight million, four hundred fifty-three thousand, four hundred eighty-eight".