1478020920 has 128 divisors (see below), whose sum is σ = 4497776640. Its totient is φ = 388523520.

The previous prime is 1478020889. The next prime is 1478020937. The reversal of 1478020920 is 290208741.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4465155 + ... + 4465485.

It is an arithmetic number, because the mean of its divisors is an integer number (35138880).

Almost surely, 2^1478020920 is an apocalyptic number.

1478020920 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 1478020920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2248888320).

1478020920 is an abundant number, since it is smaller than the sum of its proper divisors (3019755720).

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

1478020920 is a wasteful number, since it uses less digits than its factorization.

1478020920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1478020920 is about 38445.0376511716. The cubic root of 1478020920 is about 1139.0956508931.

The spelling of 1478020920 in words is "one billion, four hundred seventy-eight million, twenty thousand, nine hundred twenty".