1400148 has 72 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 418176.

The previous prime is 1400143. The next prime is 1400159. The reversal of 1400148 is 8410041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1400148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400141) 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 23 ways as a sum of consecutive naturals, for example, 15688 + ... + 15776.

It is an arithmetic number, because the mean of its divisors is an integer number (54600).

2^1400148 is an apocalyptic number.

1400148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965600).

1400148 is an abundant number, since it is smaller than the sum of its proper divisors (2531052).

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

1400148 is a wasteful number, since it uses less digits than its factorization.

1400148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1400148 is about 1183.2784963820. The cubic root of 1400148 is about 111.8728361160.

Adding to 1400148 its reverse (8410041), we get a palindrome (9810189).

The spelling of 1400148 in words is "one million, four hundred thousand, one hundred forty-eight".