78254712 has 48 divisors (see below), whose sum is σ = 215949240. Its totient is φ = 25591488.

The previous prime is 78254669. The next prime is 78254747. The reversal of 78254712 is 21745287.

It is a super-2 number, since 2×78254712² = 12247599900405888, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 6438 + ... + 14069.

Almost surely, 2^78254712 is an apocalyptic number.

78254712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78254712 is an abundant number, since it is smaller than the sum of its proper divisors (137694528).

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

78254712 is a wasteful number, since it uses less digits than its factorization.

78254712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20572 (or 20565 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 78254712 is about 8846.1693404547. The cubic root of 78254712 is about 427.7304472112.

Adding to 78254712 its reverse (21745287), we get a palindrome (99999999).

The spelling of 78254712 in words is "seventy-eight million, two hundred fifty-four thousand, seven hundred twelve".