4320040 has 32 divisors (see below), whose sum is σ = 10293480. Its totient is φ = 1626112.

The previous prime is 4319993. The next prime is 4320059. The reversal of 4320040 is 400234.

4320040 = T₂₄ + T₂₅ + ... + T₂₉₅.

It can be written as a sum of positive squares in 4 ways, for example, as 3849444 + 470596 = 1962^2 + 686^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4320040.

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, 2497 + ... + 3856.

Almost surely, 2^4320040 is an apocalyptic number.

4320040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4320040 is an abundant number, since it is smaller than the sum of its proper divisors (5973440).

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

4320040 is a wasteful number, since it uses less digits than its factorization.

4320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381 (or 6377 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 4320040 is about 2078.4705915649. The cubic root of 4320040 is about 162.8655596641.

Adding to 4320040 its reverse (400234), we get a palindrome (4720274).

It can be divided in two parts, 43200 and 40, that multiplied together give a cube (1728000 = 120³).

The spelling of 4320040 in words is "four million, three hundred twenty thousand, forty".