4000620 has 96 divisors (see below), whose sum is σ = 12644352. Its totient is φ = 937728.

The previous prime is 4000589. The next prime is 4000631. The reversal of 4000620 is 260004.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 4000596 and 4000605.

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, 17829 + ... + 18051.

It is an arithmetic number, because the mean of its divisors is an integer number (131712).

Almost surely, 2^4000620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6322176).

4000620 is an abundant number, since it is smaller than the sum of its proper divisors (8643732).

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

4000620 is a wasteful number, since it uses less digits than its factorization.

4000620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 4000620 is about 2000.1549939942. The cubic root of 4000620 is about 158.7483063452.

Adding to 4000620 its reverse (260004), we get a palindrome (4260624).

The spelling of 4000620 in words is "four million, six hundred twenty", and thus it is an aban number.