78383750 has 40 divisors (see below), whose sum is σ = 149108520. Its totient is φ = 30888000.

The previous prime is 78383743. The next prime is 78383771. The reversal of 78383750 is 5738387.

It is a super-2 number, since 2×78383750² = 12288024528125000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78383698 and 78383707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 90821 + ... + 91679.

It is an arithmetic number, because the mean of its divisors is an integer number (3727713).

Almost surely, 2^78383750 is an apocalyptic number.

78383750 is a deficient number, since it is larger than the sum of its proper divisors (70724770).

78383750 is an equidigital number, since it uses as much as digits as its factorization.

78383750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 78383750 is about 8853.4597757035. The cubic root of 78383750 is about 427.9654199505.

The spelling of 78383750 in words is "seventy-eight million, three hundred eighty-three thousand, seven hundred fifty".