2478744 has 48 divisors (see below), whose sum is σ = 6786000. Its totient is φ = 817344.

The previous prime is 2478743. The next prime is 2478761. The reversal of 2478744 is 4478742.

It is a super-2 number, since 2×2478744² = 12288343635072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 2²¹ + 4⁴ + 7 + 8³ + 7⁶ + 4⁵ + 4⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 2478699 and 2478708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12357 + ... + 12555.

It is an arithmetic number, because the mean of its divisors is an integer number (141375).

2^2478744 is an apocalyptic number.

2478744 is a gapful number since it is divisible by the number (24) 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 2478744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3393000).

2478744 is an abundant number, since it is smaller than the sum of its proper divisors (4307256).

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

2478744 is a wasteful number, since it uses less digits than its factorization.

2478744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 377 counting only the distinct ones).

The product of its digits is 50176, while the sum is 36.

The square root of 2478744 is about 1574.4027439000. The cubic root of 2478744 is about 135.3351344262.

The spelling of 2478744 in words is "two million, four hundred seventy-eight thousand, seven hundred forty-four".