1400625240 has 256 divisors, whose sum is σ = 5205150720. Its totient is φ = 294174720.

The previous prime is 1400625221. The next prime is 1400625341. The reversal of 1400625240 is 425260041.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1400625240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 612900 + ... + 615180.

It is an arithmetic number, because the mean of its divisors is an integer number (20332620).

Almost surely, 2^1400625240 is an apocalyptic number.

1400625240 is a gapful number since it is divisible by the number (10) 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 1400625240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2602575360).

1400625240 is an abundant number, since it is smaller than the sum of its proper divisors (3804525480).

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

1400625240 is a wasteful number, since it uses less digits than its factorization.

1400625240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1400625240 is about 37424.9280560431. The cubic root of 1400625240 is about 1118.8554527898.

Adding to 1400625240 its reverse (425260041), we get a palindrome (1825885281).

It can be divided in two parts, 1400 and 625240, that added together give a triangular number (626640 = T₁₁₁₉).

The spelling of 1400625240 in words is "one billion, four hundred million, six hundred twenty-five thousand, two hundred forty".