7285249220 has 12 divisors (see below), whose sum is σ = 15299023404. Its totient is φ = 2914099680.

The previous prime is 7285249189. The next prime is 7285249253. The reversal of 7285249220 is 229425827.

It can be written as a sum of positive squares in 2 ways, for example, as 4159992004 + 3125257216 = 64498^2 + 55904^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182131211 + ... + 182131250.

It is an arithmetic number, because the mean of its divisors is an integer number (1274918617).

Almost surely, 2^7285249220 is an apocalyptic number.

It is an amenable number.

7285249220 is an abundant number, since it is smaller than the sum of its proper divisors (8013774184).

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

7285249220 is a wasteful number, since it uses less digits than its factorization.

7285249220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364262470 (or 364262468 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 7285249220 is about 85353.6713914522. The cubic root of 7285249220 is about 1938.5699259906.

The spelling of 7285249220 in words is "seven billion, two hundred eighty-five million, two hundred forty-nine thousand, two hundred twenty".