77141940 has 24 divisors (see below), whose sum is σ = 215997600. Its totient is φ = 20571168.

The previous prime is 77141927. The next prime is 77141941. The reversal of 77141940 is 4914177.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77141941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642790 + ... + 642909.

It is an arithmetic number, because the mean of its divisors is an integer number (8999900).

Almost surely, 2^77141940 is an apocalyptic number.

It is an amenable number.

77141940 is an abundant number, since it is smaller than the sum of its proper divisors (138855660).

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

77141940 is a wasteful number, since it uses less digits than its factorization.

77141940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285711 (or 1285709 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 77141940 is about 8783.0484457277. The cubic root of 77141940 is about 425.6933365708.

The spelling of 77141940 in words is "seventy-seven million, one hundred forty-one thousand, nine hundred forty".