77343040 has 56 divisors (see below), whose sum is σ = 185074560. Its totient is φ = 30786048.

The previous prime is 77343037. The next prime is 77343103. The reversal of 77343040 is 4034377.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83701 + ... + 84619.

Almost surely, 2^77343040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77343040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92537280).

77343040 is an abundant number, since it is smaller than the sum of its proper divisors (107731520).

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

77343040 is a wasteful number, since it uses less digits than its factorization.

77343040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 77343040 is about 8794.4891835740. The cubic root of 77343040 is about 426.0629264828.

The spelling of 77343040 in words is "seventy-seven million, three hundred forty-three thousand, forty".