4000320240 has 80 divisors (see below), whose sum is σ = 14172569088. Its totient is φ = 914358528.

The previous prime is 4000320227. The next prime is 4000320253. The reversal of 4000320240 is 420230004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4000320227) and next prime (4000320253).

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1188892 + ... + 1192251.

Almost surely, 2^4000320240 is an apocalyptic number.

4000320240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4000320240 is an abundant number, since it is smaller than the sum of its proper divisors (10172248848).

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

4000320240 is a wasteful number, since it uses less digits than its factorization.

4000320240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381166 (or 2381160 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4000320240 is about 63248.0848721920. The cubic root of 4000320240 is about 1587.4434132805.

Adding to 4000320240 its reverse (420230004), we get a palindrome (4420550244).

The spelling of 4000320240 in words is "four billion, three hundred twenty thousand, two hundred forty".