43049920 has 56 divisors (see below), whose sum is σ = 106070400. Its totient is φ = 16622592.

The previous prime is 43049893. The next prime is 43049947. The reversal of 43049920 is 2994034.

It is an interprime number because it is at equal distance from previous prime (43049893) and next prime (43049947).

It is a super-2 number, since 2×43049920² = 3706591224012800, which contains 22 as substring.

It is a congruent number.

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, 6961 + ... + 11599.

Almost surely, 2^43049920 is an apocalyptic number.

43049920 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 43049920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53035200).

43049920 is an abundant number, since it is smaller than the sum of its proper divisors (63020480).

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

43049920 is a wasteful number, since it uses less digits than its factorization.

43049920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685 (or 4675 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 43049920 is about 6561.2437845274. The cubic root of 43049920 is about 350.4753269662.

The spelling of 43049920 in words is "forty-three million, forty-nine thousand, nine hundred twenty".