1987457472 has 560 divisors, whose sum is σ = 7930847232. Its totient is φ = 475269120.

The previous prime is 1987457419. The next prime is 1987457477. The reversal of 1987457472 is 2747547891.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987457477) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5188993 + ... + 5189375.

Almost surely, 2^1987457472 is an apocalyptic number.

1987457472 is a gapful number since it is divisible by the number (12) 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 1987457472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3965423616).

1987457472 is an abundant number, since it is smaller than the sum of its proper divisors (5943389760).

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

1987457472 is a wasteful number, since it uses less digits than its factorization.

1987457472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 419 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The square root of 1987457472 is about 44580.9092774026. The cubic root of 1987457472 is about 1257.2817591110.

The spelling of 1987457472 in words is "one billion, nine hundred eighty-seven million, four hundred fifty-seven thousand, four hundred seventy-two".