240140400 has 60 divisors (see below), whose sum is σ = 769253592. Its totient is φ = 64037120.

The previous prime is 240140359. The next prime is 240140429. The reversal of 240140400 is 4041042.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 240140400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98859 + ... + 101258.

Almost surely, 2^240140400 is an apocalyptic number.

240140400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240140400 is an abundant number, since it is smaller than the sum of its proper divisors (529113192).

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

240140400 is a wasteful number, since it uses less digits than its factorization.

240140400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200138 (or 200127 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 240140400 is about 15496.4641128226. The cubic root of 240140400 is about 621.5676596357.

Adding to 240140400 its reverse (4041042), we get a palindrome (244181442).

The spelling of 240140400 in words is "two hundred forty million, one hundred forty thousand, four hundred".