7280156880 has 200 divisors, whose sum is σ = 26384954112. Its totient is φ = 1856929536.

The previous prime is 7280156827. The next prime is 7280156881. The reversal of 7280156880 is 886510827.

7280156880 is a `hidden beast` number, since 7 + 2 + 8 + 0 + 1 + 568 + 80 = 666.

It is a super-2 number, since 2×7280156880² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7280156881) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 124617 + ... + 173463.

Almost surely, 2^7280156880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7280156880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13192477056).

7280156880 is an abundant number, since it is smaller than the sum of its proper divisors (19104797232).

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

7280156880 is a wasteful number, since it uses less digits than its factorization.

7280156880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48895 (or 48880 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 7280156880 is about 85323.8353568333. The cubic root of 7280156880 is about 1938.1181382804.

The spelling of 7280156880 in words is "seven billion, two hundred eighty million, one hundred fifty-six thousand, eight hundred eighty".