77303030 has 32 divisors (see below), whose sum is σ = 159679296. Its totient is φ = 26394624.

The previous prime is 77302993. The next prime is 77303033. The reversal of 77303030 is 3030377.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77302987 and 77303005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77303033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15842 + ... + 20138.

It is an arithmetic number, because the mean of its divisors is an integer number (4989978).

Almost surely, 2^77303030 is an apocalyptic number.

77303030 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77303030 is an abundant number, since it is smaller than the sum of its proper divisors (82376266).

77303030 is a wasteful number, since it uses less digits than its factorization.

77303030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568.

The product of its (nonzero) digits is 1323, while the sum is 23.

The square root of 77303030 is about 8792.2141693660. The cubic root of 77303030 is about 425.9894455422.

It can be divided in two parts, 7 and 7303030, that added together give a palindrome (7303037).

The spelling of 77303030 in words is "seventy-seven million, three hundred three thousand, thirty".