4003666240 has 56 divisors (see below), whose sum is σ = 10895697792. Its totient is φ = 1372684800.

The previous prime is 4003666229. The next prime is 4003666279. The reversal of 4003666240 is 426663004.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×4003666240² = 32058686722631475200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891436 + ... + 895915.

It is an arithmetic number, because the mean of its divisors is an integer number (194566032).

Almost surely, 2^4003666240 is an apocalyptic number.

4003666240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4003666240 is an abundant number, since it is smaller than the sum of its proper divisors (6892031552).

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

4003666240 is a wasteful number, since it uses less digits than its factorization.

4003666240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787375 (or 1787365 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 4003666240 is about 63274.5307370983. The cubic root of 4003666240 is about 1587.8858866411.

It can be divided in two parts, 40036 and 66240, that added together give a square (106276 = 326²).

The spelling of 4003666240 in words is "four billion, three million, six hundred sixty-six thousand, two hundred forty".