2157026 has 16 divisors (see below), whose sum is σ = 3367104. Its totient is φ = 1035504.

The previous prime is 2157017. The next prime is 2157031. The reversal of 2157026 is 6207512.

It is a super-2 number, since 2×2157026² = 9305522329352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2156992 and 2157010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7481 + ... + 7763.

It is an arithmetic number, because the mean of its divisors is an integer number (210444).

2^2157026 is an apocalyptic number.

2157026 is a deficient number, since it is larger than the sum of its proper divisors (1210078).

2157026 is a wasteful number, since it uses less digits than its factorization.

2157026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2157026 is about 1468.6817218172. The cubic root of 2157026 is about 129.2067274052.

The spelling of 2157026 in words is "two million, one hundred fifty-seven thousand, twenty-six".