1028415 has 32 divisors (see below), whose sum is σ = 1805760. Its totient is φ = 497664.

The previous prime is 1028411. The next prime is 1028437. The reversal of 1028415 is 5148201.

It is not a de Polignac number, because 1028415 - 2² = 1028411 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1028391 and 1028400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9381 + ... + 9489.

It is an arithmetic number, because the mean of its divisors is an integer number (56430).

2^1028415 is an apocalyptic number.

1028415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1028415 is a deficient number, since it is larger than the sum of its proper divisors (777345).

1028415 is a wasteful number, since it uses less digits than its factorization.

1028415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1028415 is about 1014.1079824161. The cubic root of 1028415 is about 100.9383344127.

The spelling of 1028415 in words is "one million, twenty-eight thousand, four hundred fifteen".