43494920 has 64 divisors (see below), whose sum is σ = 112648320. Its totient is φ = 14805504.

The previous prime is 43494917. The next prime is 43494931. The reversal of 43494920 is 2949434.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 45164 + ... + 46116.

It is an arithmetic number, because the mean of its divisors is an integer number (1760130).

Almost surely, 2^43494920 is an apocalyptic number.

43494920 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 43494920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56324160).

43494920 is an abundant number, since it is smaller than the sum of its proper divisors (69153400).

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

43494920 is a wasteful number, since it uses less digits than its factorization.

43494920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 43494920 is about 6595.0678540861. The cubic root of 43494920 is about 351.6787918622.

The spelling of 43494920 in words is "forty-three million, four hundred ninety-four thousand, nine hundred twenty".