1078398 has 24 divisors (see below), whose sum is σ = 2356536. Its totient is φ = 356400.

The previous prime is 1078393. The next prime is 1078403. The reversal of 1078398 is 8938701.

It is an interprime number because it is at equal distance from previous prime (1078393) and next prime (1078403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078393) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3093 + ... + 3423.

It is an arithmetic number, because the mean of its divisors is an integer number (98189).

2^1078398 is an apocalyptic number.

1078398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1078398 is an abundant number, since it is smaller than the sum of its proper divisors (1278138).

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

1078398 is a wasteful number, since it uses less digits than its factorization.

1078398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1078398 is about 1038.4594358953. The cubic root of 1078398 is about 102.5478024107.

The spelling of 1078398 in words is "one million, seventy-eight thousand, three hundred ninety-eight".