1301988 has 12 divisors (see below), whose sum is σ = 3038000. Its totient is φ = 433992.

The previous prime is 1301959. The next prime is 1302017. The reversal of 1301988 is 8891031.

It is an interprime number because it is at equal distance from previous prime (1301959) and next prime (1302017).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-5 number, since 5×1301988⁵ (a number of 32 digits) contains 55555 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54238 + ... + 54261.

2^1301988 is an apocalyptic number.

It is an amenable number.

1301988 is an abundant number, since it is smaller than the sum of its proper divisors (1736012).

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

1301988 is a wasteful number, since it uses less digits than its factorization.

1301988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108506 (or 108504 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1301988 is about 1141.0468877307. The cubic root of 1301988 is about 109.1948930242.

The spelling of 1301988 in words is "one million, three hundred one thousand, nine hundred eighty-eight".