1211496480 has 384 divisors, whose sum is σ = 4506969600. Its totient is φ = 303316992.

The previous prime is 1211496463. The next prime is 1211496493. The reversal of 1211496480 is 846941121.

1211496480 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 4 + 9 + 648 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8842972 + ... + 8843108.

It is an arithmetic number, because the mean of its divisors is an integer number (11736900).

Almost surely, 2^1211496480 is an apocalyptic number.

1211496480 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 1211496480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2253484800).

1211496480 is an abundant number, since it is smaller than the sum of its proper divisors (3295473120).

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

1211496480 is a wasteful number, since it uses less digits than its factorization.

1211496480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1211496480 is about 34806.5580027672. The cubic root of 1211496480 is about 1066.0413539803.

The spelling of 1211496480 in words is "one billion, two hundred eleven million, four hundred ninety-six thousand, four hundred eighty".