620404026 has 48 divisors (see below), whose sum is σ = 1372802592. Its totient is φ = 186769440.

The previous prime is 620404021. The next prime is 620404033.

620404026 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 620403987 and 620404005.

It is not an unprimeable number, because it can be changed into a prime (620404021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111261 + ... + 116703.

It is an arithmetic number, because the mean of its divisors is an integer number (28600054).

Almost surely, 2^620404026 is an apocalyptic number.

620404026 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 620404026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686401296).

620404026 is an abundant number, since it is smaller than the sum of its proper divisors (752398566).

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

620404026 is a wasteful number, since it uses less digits than its factorization.

620404026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5627 (or 5616 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 620404026 is about 24907.9109119974. The cubic root of 620404026 is about 852.8870805484.

It can be divided in two parts, 62040 and 4026, that added together give a palindrome (66066).

The spelling of 620404026 in words is "six hundred twenty million, four hundred four thousand, twenty-six".