1398650 has 24 divisors (see below), whose sum is σ = 2839104. Its totient is φ = 508400.

The previous prime is 1398623. The next prime is 1398659. The reversal of 1398650 is 568931.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 722 + ... + 1821.

It is an arithmetic number, because the mean of its divisors is an integer number (118296).

2^1398650 is an apocalyptic number.

1398650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398650 is an abundant number, since it is smaller than the sum of its proper divisors (1440454).

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

1398650 is a wasteful number, since it uses less digits than its factorization.

1398650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1398650 is about 1182.6453399054. The cubic root of 1398650 is about 111.8329247852.

It can be divided in two parts, 1398 and 650, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1398650 in words is "one million, three hundred ninety-eight thousand, six hundred fifty".