7642887072 has 24 divisors (see below), whose sum is σ = 20062578816. Its totient is φ = 2547628992.

The previous prime is 7642887053. The next prime is 7642887079. The reversal of 7642887072 is 2707882467.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (7642887079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39806608 + ... + 39806799.

It is an arithmetic number, because the mean of its divisors is an integer number (835940784).

Almost surely, 2^7642887072 is an apocalyptic number.

It is an amenable number.

7642887072 is an abundant number, since it is smaller than the sum of its proper divisors (12419691744).

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

7642887072 is a wasteful number, since it uses less digits than its factorization.

7642887072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79613420 (or 79613412 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 51.

The square root of 7642887072 is about 87423.6070635386. The cubic root of 7642887072 is about 1969.7864586835.

The spelling of 7642887072 in words is "seven billion, six hundred forty-two million, eight hundred eighty-seven thousand, seventy-two".