78375750 has 64 divisors (see below), whose sum is σ = 201996288. Its totient is φ = 20220000.

The previous prime is 78375749. The next prime is 78375757. The reversal of 78375750 is 5757387.

It is a super-2 number, since 2×78375750² = 12285516376125000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78375757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21565 + ... + 24935.

It is an arithmetic number, because the mean of its divisors is an integer number (3156192).

Almost surely, 2^78375750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78375750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100998144).

78375750 is an abundant number, since it is smaller than the sum of its proper divisors (123620538).

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

78375750 is a wasteful number, since it uses less digits than its factorization.

78375750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422 (or 3412 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 42.

The square root of 78375750 is about 8853.0079633987. The cubic root of 78375750 is about 427.9508597905.

The spelling of 78375750 in words is "seventy-eight million, three hundred seventy-five thousand, seven hundred fifty".