2126728 has 8 divisors (see below), whose sum is σ = 3987630. Its totient is φ = 1063360.

The previous prime is 2126687. The next prime is 2126749. The reversal of 2126728 is 8276212.

It can be written as a sum of positive squares in only one way, i.e., 1483524 + 643204 = 1218^2 + 802^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2126696 and 2126705.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132913 + ... + 132928.

2^2126728 is an apocalyptic number.

It is an amenable number.

2126728 is a deficient number, since it is larger than the sum of its proper divisors (1860902).

2126728 is a wasteful number, since it uses less digits than its factorization.

2126728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265847 (or 265843 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 2126728 is about 1458.3305523783. The cubic root of 2126728 is about 128.5989185193.

The spelling of 2126728 in words is "two million, one hundred twenty-six thousand, seven hundred twenty-eight".