2478788 has 24 divisors (see below), whose sum is σ = 4742808. Its totient is φ = 1126656.

The previous prime is 2478761. The next prime is 2478793. The reversal of 2478788 is 8878742.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20164 + 2458624 = 142^2 + 1568^2 .

It is a super-2 number, since 2×2478788² = 12288779897888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3470 + ... + 4122.

It is an arithmetic number, because the mean of its divisors is an integer number (197617).

2^2478788 is an apocalyptic number.

It is an amenable number.

2478788 is a deficient number, since it is larger than the sum of its proper divisors (2264020).

2478788 is a wasteful number, since it uses less digits than its factorization.

2478788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 741 counting only the distinct ones).

The product of its digits is 200704, while the sum is 44.

The square root of 2478788 is about 1574.4167173909. The cubic root of 2478788 is about 135.3359351961.

The spelling of 2478788 in words is "two million, four hundred seventy-eight thousand, seven hundred eighty-eight".