1026381 has 8 divisors (see below), whose sum is σ = 1373760. Its totient is φ = 681632.

The previous prime is 1026371. The next prime is 1026383. The reversal of 1026381 is 1836201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1026381 - 2⁷ = 1026253 is a prime.

It is a super-2 number, since 2×1026381² = 2106915914322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026383) 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, 601 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (171720).

2^1026381 is an apocalyptic number.

It is an amenable number.

1026381 is a deficient number, since it is larger than the sum of its proper divisors (347379).

1026381 is an equidigital number, since it uses as much as digits as its factorization.

1026381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1026381 is about 1013.1046342802. The cubic root of 1026381 is about 100.8717451875.

The spelling of 1026381 in words is "one million, twenty-six thousand, three hundred eighty-one".