1478043840 has 336 divisors, whose sum is σ = 5881311072. Its totient is φ = 311721984.

The previous prime is 1478043821. The next prime is 1478043857. The reversal of 1478043840 is 483408741.

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-2 number, since 2×1478043840² = 4369227185923891200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 610312 + ... + 612728.

It is an arithmetic number, because the mean of its divisors is an integer number (17503902).

Almost surely, 2^1478043840 is an apocalyptic number.

1478043840 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 1478043840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2940655536).

1478043840 is an abundant number, since it is smaller than the sum of its proper divisors (4403267232).

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

1478043840 is a wasteful number, since it uses less digits than its factorization.

1478043840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 2447 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 1478043840 is about 38445.3357379019. The cubic root of 1478043840 is about 1139.1015389327.

The spelling of 1478043840 in words is "one billion, four hundred seventy-eight million, forty-three thousand, eight hundred forty".