3620236440 has 128 divisors (see below), whose sum is σ = 11589465600. Its totient is φ = 902016000.

The previous prime is 3620236439. The next prime is 3620236441. The reversal of 3620236440 is 446320263.

It is a happy number.

3620236440 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3620236439) and next prime (3620236441).

It is a super-2 number, since 2×3620236440² = 26212223763007747200, which contains 22 as substring.

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 = 3620236398 and 3620236407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620236441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155565 + ... + 177315.

It is an arithmetic number, because the mean of its divisors is an integer number (90542700).

Almost surely, 2^3620236440 is an apocalyptic number.

3620236440 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 3620236440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5794732800).

3620236440 is an abundant number, since it is smaller than the sum of its proper divisors (7969229160).

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

3620236440 is a wasteful number, since it uses less digits than its factorization.

3620236440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21857 (or 21853 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 3620236440 is about 60168.4006767672. The cubic root of 3620236440 is about 1535.4852367123.

The spelling of 3620236440 in words is "three billion, six hundred twenty million, two hundred thirty-six thousand, four hundred forty".