1478008840 has 128 divisors (see below), whose sum is σ = 4162129920. Its totient is φ = 458899200.

The previous prime is 1478008837. The next prime is 1478008843. The reversal of 1478008840 is 488008741.

It is an interprime number because it is at equal distance from previous prime (1478008837) and next prime (1478008843).

It is a super-2 number, since 2×1478008840² = 4369020262236291200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1478008793 and 1478008802.

It is not an unprimeable number, because it can be changed into a prime (1478008843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 957109 + ... + 958651.

It is an arithmetic number, because the mean of its divisors is an integer number (32516640).

Almost surely, 2^1478008840 is an apocalyptic number.

1478008840 is a gapful number since it is divisible by the number (10) 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 1478008840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2081064960).

1478008840 is an abundant number, since it is smaller than the sum of its proper divisors (2684121080).

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

1478008840 is a wasteful number, since it uses less digits than its factorization.

1478008840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 1478008840 is about 38444.8805434482. The cubic root of 1478008840 is about 1139.0925475737.

Subtracting from 1478008840 its reverse (488008741), we obtain a palindrome (990000099).

The spelling of 1478008840 in words is "one billion, four hundred seventy-eight million, eight thousand, eight hundred forty".