77250330 has 96 divisors (see below), whose sum is σ = 213093504. Its totient is φ = 19375488.

The previous prime is 77250323. The next prime is 77250331. The reversal of 77250330 is 3305277.

It is a super-3 number, since 3×77250330³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 77250294 and 77250303.

It is not an unprimeable number, because it can be changed into a prime (77250331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138412 + ... + 138968.

It is an arithmetic number, because the mean of its divisors is an integer number (2219724).

Almost surely, 2^77250330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77250330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106546752).

77250330 is an abundant number, since it is smaller than the sum of its proper divisors (135843174).

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

77250330 is a wasteful number, since it uses less digits than its factorization.

77250330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 77250330 is about 8789.2166886475. The cubic root of 77250330 is about 425.8926198970.

The spelling of 77250330 in words is "seventy-seven million, two hundred fifty thousand, three hundred thirty".