1987212576 has 96 divisors (see below), whose sum is σ = 5405920128. Its totient is φ = 638668800.

The previous prime is 1987212551. The next prime is 1987212589. The reversal of 1987212576 is 6752127891.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 398901 + ... + 403851.

It is an arithmetic number, because the mean of its divisors is an integer number (56311668).

Almost surely, 2^1987212576 is an apocalyptic number.

1987212576 is a gapful number since it is divisible by the number (16) 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 1987212576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2702960064).

1987212576 is an abundant number, since it is smaller than the sum of its proper divisors (3418707552).

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

1987212576 is a wasteful number, since it uses less digits than its factorization.

1987212576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114 (or 5106 counting only the distinct ones).

The product of its digits is 423360, while the sum is 48.

The square root of 1987212576 is about 44578.1625462513. The cubic root of 1987212576 is about 1257.2301159227.

The spelling of 1987212576 in words is "one billion, nine hundred eighty-seven million, two hundred twelve thousand, five hundred seventy-six".