1987072 has 20 divisors (see below), whose sum is σ = 3971286. Its totient is φ = 993280.

The previous prime is 1987067. The next prime is 1987081. The reversal of 1987072 is 2707891.

It can be written as a sum of positive squares in only one way, i.e., 1597696 + 389376 = 1264^2 + 624^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1429 + ... + 2452.

2^1987072 is an apocalyptic number.

It is an amenable number.

1987072 is a deficient number, since it is larger than the sum of its proper divisors (1984214).

1987072 is an frugal number, since it uses more digits than its factorization.

1987072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899 (or 3883 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1987072 is about 1409.6354138571. The cubic root of 1987072 is about 125.7200469615.

The spelling of 1987072 in words is "one million, nine hundred eighty-seven thousand, seventy-two".