1400312400 has 60 divisors (see below), whose sum is σ = 4485671232. Its totient is φ = 373416320.

The previous prime is 1400312371. The next prime is 1400312411. The reversal of 1400312400 is 42130041.

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 1400312400.

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, 582264 + ... + 584663.

Almost surely, 2^1400312400 is an apocalyptic number.

1400312400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400312400 is an abundant number, since it is smaller than the sum of its proper divisors (3085358832).

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

1400312400 is a wasteful number, since it uses less digits than its factorization.

1400312400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166948 (or 1166937 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1400312400 is about 37420.7482554799. The cubic root of 1400312400 is about 1118.7721450419.

Adding to 1400312400 its reverse (42130041), we get a palindrome (1442442441).

The spelling of 1400312400 in words is "one billion, four hundred million, three hundred twelve thousand, four hundred".