43496640 has 168 divisors, whose sum is σ = 163330128. Its totient is φ = 10536960.

The previous prime is 43496633. The next prime is 43496647. The reversal of 43496640 is 4669434.

43496640 is a `hidden beast` number, since 4 + 3 + 4 + 9 + 6 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (43496633) and next prime (43496647).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 43496595 and 43496604.

It is not an unprimeable number, because it can be changed into a prime (43496647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30994 + ... + 32366.

Almost surely, 2^43496640 is an apocalyptic number.

43496640 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 43496640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81665064).

43496640 is an abundant number, since it is smaller than the sum of its proper divisors (119833488).

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

43496640 is a wasteful number, since it uses less digits than its factorization.

43496640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 43496640 is about 6595.1982532749. The cubic root of 43496640 is about 351.6834274959.

The spelling of 43496640 in words is "forty-three million, four hundred ninety-six thousand, six hundred forty".