75402628240 has 40 divisors (see below), whose sum is σ = 185623532280. Its totient is φ = 28386871296.

The previous prime is 75402628237. The next prime is 75402628261. The reversal of 75402628240 is 4282620457.

It can be written as a sum of positive squares in 4 ways, for example, as 26203839376 + 49198788864 = 161876^2 + 221808^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 75402628193 and 75402628202.

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, 27720195 + ... + 27722914.

It is an arithmetic number, because the mean of its divisors is an integer number (4640588307).

Almost surely, 2^75402628240 is an apocalyptic number.

It is an amenable number.

75402628240 is an abundant number, since it is smaller than the sum of its proper divisors (110220904040).

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

75402628240 is a wasteful number, since it uses less digits than its factorization.

75402628240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55443139 (or 55443133 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 75402628240 in words is "seventy-five billion, four hundred two million, six hundred twenty-eight thousand, two hundred forty".