2451020 has 48 divisors (see below), whose sum is σ = 6054048. Its totient is φ = 821760.

The previous prime is 2451017. The next prime is 2451023. The reversal of 2451020 is 201542.

It is an interprime number because it is at equal distance from previous prime (2451017) and next prime (2451023).

It is a junction number, because it is equal to n+sod(n) for n = 2450986 and 2451004.

It is not an unprimeable number, because it can be changed into a prime (2451023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2432 + ... + 3288.

It is an arithmetic number, because the mean of its divisors is an integer number (126126).

2^2451020 is an apocalyptic number.

2451020 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 2451020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3027024).

2451020 is an abundant number, since it is smaller than the sum of its proper divisors (3603028).

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

2451020 is a wasteful number, since it uses less digits than its factorization.

2451020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2451020 is about 1565.5733773924. The cubic root of 2451020 is about 134.8286807162.

Adding to 2451020 its reverse (201542), we get a palindrome (2652562).

The spelling of 2451020 in words is "two million, four hundred fifty-one thousand, twenty".