78352650 has 96 divisors (see below), whose sum is σ = 218081280. Its totient is φ = 20684160.

The previous prime is 78352639. The next prime is 78352657. The reversal of 78352650 is 5625387.

78352650 is a `hidden beast` number, since 7 + 83 + 526 + 50 = 666.

It is a super-2 number, since 2×78352650² = 12278275524045000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78352657) by changing a digit.

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, 171222 + ... + 171678.

It is an arithmetic number, because the mean of its divisors is an integer number (2271680).

Almost surely, 2^78352650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78352650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109040640).

78352650 is an abundant number, since it is smaller than the sum of its proper divisors (139728630).

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

78352650 is a wasteful number, since it uses less digits than its factorization.

78352650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 78352650 is about 8851.7032259334. The cubic root of 78352650 is about 427.9088117665.

The spelling of 78352650 in words is "seventy-eight million, three hundred fifty-two thousand, six hundred fifty".