1432400340 has 72 divisors (see below), whose sum is σ = 4665542112. Its totient is φ = 327405120.

The previous prime is 1432400311. The next prime is 1432400381. The reversal of 1432400340 is 430042341.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240666 + ... + 246545.

It is an arithmetic number, because the mean of its divisors is an integer number (64799196).

Almost surely, 2^1432400340 is an apocalyptic number.

1432400340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1432400340 is an abundant number, since it is smaller than the sum of its proper divisors (3233141772).

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

1432400340 is a wasteful number, since it uses less digits than its factorization.

1432400340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487237 (or 487228 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1432400340 is about 37847.0651438127. The cubic root of 1432400340 is about 1127.2531869465.

Adding to 1432400340 its reverse (430042341), we get a palindrome (1862442681).

The spelling of 1432400340 in words is "one billion, four hundred thirty-two million, four hundred thousand, three hundred forty".