2640460072 has 8 divisors (see below), whose sum is σ = 4950862650. Its totient is φ = 1320230032.

The previous prime is 2640460051. The next prime is 2640460087. The reversal of 2640460072 is 2700640462.

It can be written as a sum of positive squares in only one way, i.e., 2096357796 + 544102276 = 45786^2 + 23326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165028747 + ... + 165028762.

Almost surely, 2^2640460072 is an apocalyptic number.

It is an amenable number.

2640460072 is a deficient number, since it is larger than the sum of its proper divisors (2310402578).

2640460072 is a wasteful number, since it uses less digits than its factorization.

2640460072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330057515 (or 330057511 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 2640460072 is about 51385.4071892011. The cubic root of 2640460072 is about 1382.1649264964.

The spelling of 2640460072 in words is "two billion, six hundred forty million, four hundred sixty thousand, seventy-two".