2249776980 has 144 divisors (see below), whose sum is σ = 7458744384. Its totient is φ = 544373760.

The previous prime is 2249776979. The next prime is 2249777011. The reversal of 2249776980 is 896779422.

2249776980 is a `hidden beast` number, since 2 + 2 + 497 + 76 + 9 + 80 = 666.

It is a super-2 number, since 2×2249776980² = 10122992919475840800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1933879 + ... + 1935041.

It is an arithmetic number, because the mean of its divisors is an integer number (51796836).

Almost surely, 2^2249776980 is an apocalyptic number.

2249776980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2249776980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3729372192).

2249776980 is an abundant number, since it is smaller than the sum of its proper divisors (5208967404).

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

2249776980 is a wasteful number, since it uses less digits than its factorization.

2249776980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166 (or 2161 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 2249776980 is about 47431.8140070565. The cubic root of 2249776980 is about 1310.3274010261.

The spelling of 2249776980 in words is "two billion, two hundred forty-nine million, seven hundred seventy-six thousand, nine hundred eighty".