7238638620 has 72 divisors (see below), whose sum is σ = 23112857040. Its totient is φ = 1828707840.

The previous prime is 7238638577. The next prime is 7238638679. The reversal of 7238638620 is 268368327.

7238638620 is a `hidden beast` number, since 7 + 2 + 3 + 8 + 638 + 6 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1054861 + ... + 1061700.

Almost surely, 2^7238638620 is an apocalyptic number.

It is an amenable number.

7238638620 is an abundant number, since it is smaller than the sum of its proper divisors (15874218420).

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

7238638620 is a wasteful number, since it uses less digits than its factorization.

7238638620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116595 (or 2116590 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 7238638620 is about 85080.1893509882. The cubic root of 7238638620 is about 1934.4267917351.

The spelling of 7238638620 in words is "seven billion, two hundred thirty-eight million, six hundred thirty-eight thousand, six hundred twenty".