77333838 has 16 divisors (see below), whose sum is σ = 162808320. Its totient is φ = 24421176.

The previous prime is 77333803. The next prime is 77333869. The reversal of 77333838 is 83833377.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77333838.

It is a congruent number.

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, 339070 + ... + 339297.

It is an arithmetic number, because the mean of its divisors is an integer number (10175520).

Almost surely, 2^77333838 is an apocalyptic number.

77333838 is an abundant number, since it is smaller than the sum of its proper divisors (85474482).

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

77333838 is a wasteful number, since it uses less digits than its factorization.

77333838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678391.

The product of its digits is 254016, while the sum is 42.

The square root of 77333838 is about 8793.9659994794. The cubic root of 77333838 is about 426.0460286618.

The spelling of 77333838 in words is "seventy-seven million, three hundred thirty-three thousand, eight hundred thirty-eight".