78551148 has 96 divisors (see below), whose sum is σ = 209735680. Its totient is φ = 22705920.

The previous prime is 78551131. The next prime is 78551183. The reversal of 78551148 is 84115587.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 31 ways as a sum of consecutive naturals, for example, 178713 + ... + 179151.

Almost surely, 2^78551148 is an apocalyptic number.

78551148 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78551148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104867840).

78551148 is an abundant number, since it is smaller than the sum of its proper divisors (131184532).

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

78551148 is a wasteful number, since it uses less digits than its factorization.

78551148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 525 counting only the distinct ones).

The product of its digits is 44800, while the sum is 39.

The square root of 78551148 is about 8862.9085519371. The cubic root of 78551148 is about 428.2698606744.

The spelling of 78551148 in words is "seventy-eight million, five hundred fifty-one thousand, one hundred forty-eight".