43975680 has 176 divisors, whose sum is σ = 161139840. Its totient is φ = 10027008.

The previous prime is 43975663. The next prime is 43975697. The reversal of 43975680 is 8657934.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43975663) and next prime (43975697).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 107316 + ... + 107724.

Almost surely, 2^43975680 is an apocalyptic number.

43975680 is a gapful number since it is divisible by the number (40) 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 43975680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80569920).

43975680 is an abundant number, since it is smaller than the sum of its proper divisors (117164160).

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

43975680 is a wasteful number, since it uses less digits than its factorization.

43975680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 43975680 is about 6631.4161383524. The cubic root of 43975680 is about 352.9697775515.

The spelling of 43975680 in words is "forty-three million, nine hundred seventy-five thousand, six hundred eighty".