43948640 has 24 divisors (see below), whose sum is σ = 103829040. Its totient is φ = 17579392.

The previous prime is 43948631. The next prime is 43948649. The reversal of 43948640 is 4684934.

It is an interprime number because it is at equal distance from previous prime (43948631) and next prime (43948649).

It is a junction number, because it is equal to n+sod(n) for n = 43948594 and 43948603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43948649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137180 + ... + 137499.

It is an arithmetic number, because the mean of its divisors is an integer number (4326210).

Almost surely, 2^43948640 is an apocalyptic number.

43948640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43948640 is an abundant number, since it is smaller than the sum of its proper divisors (59880400).

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

43948640 is a wasteful number, since it uses less digits than its factorization.

43948640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274694 (or 274686 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 43948640 is about 6629.3770446400. The cubic root of 43948640 is about 352.8974174070.

The spelling of 43948640 in words is "forty-three million, nine hundred forty-eight thousand, six hundred forty".