1521294480 has 80 divisors (see below), whose sum is σ = 5240021760. Its totient is φ = 405677952.

The previous prime is 1521294473. The next prime is 1521294491. The reversal of 1521294480 is 844921251.

1521294480 is a `hidden beast` number, since 1 + 52 + 129 + 4 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349992 + ... + 354311.

It is an arithmetic number, because the mean of its divisors is an integer number (65500272).

Almost surely, 2^1521294480 is an apocalyptic number.

1521294480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1521294480 is an abundant number, since it is smaller than the sum of its proper divisors (3718727280).

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

1521294480 is a wasteful number, since it uses less digits than its factorization.

1521294480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704325 (or 704313 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1521294480 is about 39003.7752018955. The cubic root of 1521294480 is about 1150.1057193295.

The spelling of 1521294480 in words is "one billion, five hundred twenty-one million, two hundred ninety-four thousand, four hundred eighty".