3623878440 has 768 divisors, whose sum is σ = 15982686720. Its totient is φ = 716636160.

The previous prime is 3623878409. The next prime is 3623878451. The reversal of 3623878440 is 448783263.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 15036720 + ... + 15036960.

It is an arithmetic number, because the mean of its divisors is an integer number (20810790).

Almost surely, 2^3623878440 is an apocalyptic number.

3623878440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3623878440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7991343360).

3623878440 is an abundant number, since it is smaller than the sum of its proper divisors (12358808280).

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

3623878440 is a wasteful number, since it uses less digits than its factorization.

3623878440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The square root of 3623878440 is about 60198.6581245795. The cubic root of 3623878440 is about 1535.9999694824. Note that the first 4 decimals are identical.

The spelling of 3623878440 in words is "three billion, six hundred twenty-three million, eight hundred seventy-eight thousand, four hundred forty".