43201920 has 64 divisors (see below), whose sum is σ = 137712240. Its totient is φ = 11520000.

The previous prime is 43201859. The next prime is 43201927. The reversal of 43201920 is 2910234.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43201927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9331 + ... + 13170.

Almost surely, 2^43201920 is an apocalyptic number.

43201920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43201920 is an abundant number, since it is smaller than the sum of its proper divisors (94510320).

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

43201920 is a wasteful number, since it uses less digits than its factorization.

43201920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22523 (or 22511 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 43201920 is about 6572.8167477878. The cubic root of 43201920 is about 350.8873267623.

It can be divided in two parts, 4320 and 1920, that multiplied together give a square (8294400 = 2880²).

The spelling of 43201920 in words is "forty-three million, two hundred one thousand, nine hundred twenty".