77741472 has 96 divisors (see below), whose sum is σ = 215332992. Its totient is φ = 24510464.

The previous prime is 77741471. The next prime is 77741479. The reversal of 77741472 is 27414777.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 77741472.

It is not an unprimeable number, because it can be changed into a prime (77741471) 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, 302368 + ... + 302624.

It is an arithmetic number, because the mean of its divisors is an integer number (2243052).

Almost surely, 2^77741472 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 77741472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107666496).

77741472 is an abundant number, since it is smaller than the sum of its proper divisors (137591520).

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

77741472 is a wasteful number, since it uses less digits than its factorization.

77741472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 422 counting only the distinct ones).

The product of its digits is 76832, while the sum is 39.

The square root of 77741472 is about 8817.1124524983. The cubic root of 77741472 is about 426.7932935789.

The spelling of 77741472 in words is "seventy-seven million, seven hundred forty-one thousand, four hundred seventy-two".