2207128 has 32 divisors (see below), whose sum is σ = 5160960. Its totient is φ = 859680.

The previous prime is 2207123. The next prime is 2207129. The reversal of 2207128 is 8217022.

2207128 = T₆₂ + T₆₃ + ... + T₂₃₇.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2207099 and 2207108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2207123) 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, 1176 + ... + 2407.

It is an arithmetic number, because the mean of its divisors is an integer number (161280).

2^2207128 is an apocalyptic number.

2207128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2207128 is an abundant number, since it is smaller than the sum of its proper divisors (2953832).

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

2207128 is a wasteful number, since it uses less digits than its factorization.

2207128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607 (or 3603 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2207128 is about 1485.6406025685. The cubic root of 2207128 is about 130.1994571329.

The spelling of 2207128 in words is "two million, two hundred seven thousand, one hundred twenty-eight".