77214284 has 48 divisors (see below), whose sum is σ = 159022080. Its totient is φ = 32123520.

The previous prime is 77214281. The next prime is 77214307. The reversal of 77214284 is 48241277.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77214281) 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 15 ways as a sum of consecutive naturals, for example, 147944 + ... + 148464.

It is an arithmetic number, because the mean of its divisors is an integer number (3312960).

Almost surely, 2^77214284 is an apocalyptic number.

It is an amenable number.

77214284 is an abundant number, since it is smaller than the sum of its proper divisors (81807796).

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

77214284 is a wasteful number, since it uses less digits than its factorization.

77214284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 676 counting only the distinct ones).

The product of its digits is 25088, while the sum is 35.

The square root of 77214284 is about 8787.1658684698. The cubic root of 77214284 is about 425.8263672619.

The spelling of 77214284 in words is "seventy-seven million, two hundred fourteen thousand, two hundred eighty-four".