7215827620 has 24 divisors (see below), whose sum is σ = 15174884088. Its totient is φ = 2882208000.

The previous prime is 7215827611. The next prime is 7215827621. The reversal of 7215827620 is 267285127.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4104196096 + 3111631524 = 64064^2 + 55782^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7215827621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243321 + ... + 271360.

It is an arithmetic number, because the mean of its divisors is an integer number (632286837).

Almost surely, 2^7215827620 is an apocalyptic number.

It is an amenable number.

7215827620 is an abundant number, since it is smaller than the sum of its proper divisors (7959056468).

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

7215827620 is a wasteful number, since it uses less digits than its factorization.

7215827620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515391 (or 515389 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 7215827620 is about 84946.0276881739. The cubic root of 7215827620 is about 1932.3926780213.

The spelling of 7215827620 in words is "seven billion, two hundred fifteen million, eight hundred twenty-seven thousand, six hundred twenty".