76305390 has 32 divisors (see below), whose sum is σ = 209295360. Its totient is φ = 17441184.

The previous prime is 76305377. The next prime is 76305391. The reversal of 76305390 is 9350367.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76305391) 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, 181470 + ... + 181889.

It is an arithmetic number, because the mean of its divisors is an integer number (6540480).

Almost surely, 2^76305390 is an apocalyptic number.

76305390 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

76305390 is an abundant number, since it is smaller than the sum of its proper divisors (132989970).

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

76305390 is a wasteful number, since it uses less digits than its factorization.

76305390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363376.

The product of its (nonzero) digits is 17010, while the sum is 33.

The square root of 76305390 is about 8735.2956446820. The cubic root of 76305390 is about 424.1489590241.

The spelling of 76305390 in words is "seventy-six million, three hundred five thousand, three hundred ninety".