11028531 has 16 divisors (see below), whose sum is σ = 15575040. Its totient is φ = 6922080.

The previous prime is 11028509. The next prime is 11028547. The reversal of 11028531 is 13582011.

It is not a de Polignac number, because 11028531 - 2¹⁵ = 10995763 is a prime.

It is a super-2 number, since 2×11028531² = 243256992035922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11028498 and 11028507.

It is not an unprimeable number, because it can be changed into a prime (11028551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10381 + ... + 11393.

It is an arithmetic number, because the mean of its divisors is an integer number (973440).

Almost surely, 2^11028531 is an apocalyptic number.

11028531 is a deficient number, since it is larger than the sum of its proper divisors (4546509).

11028531 is a wasteful number, since it uses less digits than its factorization.

11028531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 11028531 is about 3320.9232150112. The cubic root of 11028531 is about 222.5901229827.

The spelling of 11028531 in words is "eleven million, twenty-eight thousand, five hundred thirty-one".