1156026 has 16 divisors (see below), whose sum is σ = 2412864. Its totient is φ = 368544.

The previous prime is 1156019. The next prime is 1156031. The reversal of 1156026 is 6206511.

It is a happy number.

It is a super-2 number, since 2×1156026² = 2672792225352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1155993 and 1156011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4051 + ... + 4326.

It is an arithmetic number, because the mean of its divisors is an integer number (150804).

2^1156026 is an apocalyptic number.

1156026 is an abundant number, since it is smaller than the sum of its proper divisors (1256838).

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

1156026 is a wasteful number, since it uses less digits than its factorization.

1156026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8405.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1156026 is about 1075.1864954509. The cubic root of 1156026 is about 104.9516330526.

The spelling of 1156026 in words is "one million, one hundred fifty-six thousand, twenty-six".