4049520 has 80 divisors (see below), whose sum is σ = 12856320. Its totient is φ = 1053952.

The previous prime is 4049497. The next prime is 4049533. The reversal of 4049520 is 259404.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×4049520² = 32797224460800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 11101 + ... + 11459.

It is an arithmetic number, because the mean of its divisors is an integer number (160704).

Almost surely, 2^4049520 is an apocalyptic number.

4049520 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 4049520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6428160).

4049520 is an abundant number, since it is smaller than the sum of its proper divisors (8806800).

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

4049520 is a wasteful number, since it uses less digits than its factorization.

4049520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 4049520 is about 2012.3419192573. The cubic root of 4049520 is about 159.3924878926.

The spelling of 4049520 in words is "four million, forty-nine thousand, five hundred twenty".