7155909228 has 24 divisors (see below), whose sum is σ = 17981515888. Its totient is φ = 2201818176.

The previous prime is 7155909227. The next prime is 7155909259. The reversal of 7155909228 is 8229095517.

It is not an unprimeable number, because it can be changed into a prime (7155909221) 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, 22935451 + ... + 22935762.

Almost surely, 2^7155909228 is an apocalyptic number.

7155909228 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7155909228 is an abundant number, since it is smaller than the sum of its proper divisors (10825606660).

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

7155909228 is a wasteful number, since it uses less digits than its factorization.

7155909228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45871233 (or 45871231 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 7155909228 is about 84592.6074075034. The cubic root of 7155909228 is about 1927.0291059678.

The spelling of 7155909228 in words is "seven billion, one hundred fifty-five million, nine hundred nine thousand, two hundred twenty-eight".