3520552440 has 128 divisors (see below), whose sum is σ = 11568744000. Its totient is φ = 853106688.

The previous prime is 3520552439. The next prime is 3520552493. The reversal of 3520552440 is 442550253.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3520552398 and 3520552407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29406 + ... + 88914.

Almost surely, 2^3520552440 is an apocalyptic number.

3520552440 is a gapful number since it is divisible by the number (30) 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 3520552440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5784372000).

3520552440 is an abundant number, since it is smaller than the sum of its proper divisors (8048191560).

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

3520552440 is a wasteful number, since it uses less digits than its factorization.

3520552440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59569 (or 59565 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 3520552440 is about 59334.2434012603. The cubic root of 3520552440 is about 1521.2605598030.

The spelling of 3520552440 in words is "three billion, five hundred twenty million, five hundred fifty-two thousand, four hundred forty".