2188228724 has 12 divisors (see below), whose sum is σ = 4177527648. Its totient is φ = 994649400.

The previous prime is 2188228711. The next prime is 2188228759. The reversal of 2188228724 is 4278228812.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 49732471 = 2188228724 / (2 + 1 + 8 + 8 + 2 + 2 + 8 + 7 + 2 + 4).

It is a congruent number.

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, 24866192 + ... + 24866279.

It is an arithmetic number, because the mean of its divisors is an integer number (348127304).

Almost surely, 2^2188228724 is an apocalyptic number.

It is an amenable number.

2188228724 is a deficient number, since it is larger than the sum of its proper divisors (1989298924).

2188228724 is a wasteful number, since it uses less digits than its factorization.

2188228724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49732486 (or 49732484 counting only the distinct ones).

The product of its digits is 229376, while the sum is 44.

The square root of 2188228724 is about 46778.5070732276. The cubic root of 2188228724 is about 1298.2676578427.

The spelling of 2188228724 in words is "two billion, one hundred eighty-eight million, two hundred twenty-eight thousand, seven hundred twenty-four".