2478020 has 24 divisors (see below), whose sum is σ = 5431104. Its totient is φ = 947936.

The previous prime is 2478017. The next prime is 2478023. The reversal of 2478020 is 208742.

It is an interprime number because it is at equal distance from previous prime (2478017) and next prime (2478023).

It is a super-2 number, since 2×2478020² = 12281166240800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (2478023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2234 + ... + 3153.

It is an arithmetic number, because the mean of its divisors is an integer number (226296).

2^2478020 is an apocalyptic number.

2478020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2478020 is an abundant number, since it is smaller than the sum of its proper divisors (2953084).

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

2478020 is a wasteful number, since it uses less digits than its factorization.

2478020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419 (or 5417 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2478020 is about 1574.1727986470. The cubic root of 2478020 is about 135.3219567606.

The spelling of 2478020 in words is "two million, four hundred seventy-eight thousand, twenty".