78324750 has 96 divisors (see below), whose sum is σ = 242094528. Its totient is φ = 17899200.

The previous prime is 78324739. The next prime is 78324823. The reversal of 78324750 is 5742387.

It is a super-2 number, since 2×78324750² = 12269532925125000, 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 (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13264 + ... + 18236.

It is an arithmetic number, because the mean of its divisors is an integer number (2521818).

Almost surely, 2^78324750 is an apocalyptic number.

78324750 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78324750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121047264).

78324750 is an abundant number, since it is smaller than the sum of its proper divisors (163769778).

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

78324750 is a wasteful number, since it uses less digits than its factorization.

78324750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003 (or 4990 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 78324750 is about 8850.1271177311. The cubic root of 78324750 is about 427.8580154707.

The spelling of 78324750 in words is "seventy-eight million, three hundred twenty-four thousand, seven hundred fifty".