2455020 has 72 divisors (see below), whose sum is σ = 7783776. Its totient is φ = 625152.

The previous prime is 2455003. The next prime is 2455087. The reversal of 2455020 is 205542.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2454984 and 2455002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3844 + ... + 4436.

It is an arithmetic number, because the mean of its divisors is an integer number (108108).

2^2455020 is an apocalyptic number.

2455020 is a gapful number since it is divisible by the number (20) 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 2455020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3891888).

2455020 is an abundant number, since it is smaller than the sum of its proper divisors (5328756).

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

2455020 is a wasteful number, since it uses less digits than its factorization.

2455020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2455020 is about 1566.8503438427. The cubic root of 2455020 is about 134.9019864700.

The spelling of 2455020 in words is "two million, four hundred fifty-five thousand, twenty".