30777672 has 32 divisors (see below), whose sum is σ = 78209280. Its totient is φ = 10090560.
The previous prime is 30777661. The next prime is 30777707. The reversal of 30777672 is 27677703.
It is a self number, because there is not a number n which added to its sum of digits gives 30777672.
It is an unprimeable number.
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 7 ways as a sum of consecutive naturals, for example, 9048 + ... + 11975.
It is an arithmetic number, because the mean of its divisors is an integer number (2444040).
Almost surely, 230777672 is an apocalyptic number.
It is an amenable number.
30777672 is an abundant number, since it is smaller than the sum of its proper divisors (47431608).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30777672 is a wasteful number, since it uses less digits than its factorization.
30777672 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 21093 (or 21089 counting only the distinct ones).
The product of its (nonzero) digits is 86436, while the sum is 39.
The square root of 30777672 is about 5547.7627923335. The cubic root of 30777672 is about 313.3852768369.
The spelling of 30777672 in words is "thirty million, seven hundred seventy-seven thousand, six hundred seventy-two".
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