1415988 has 48 divisors (see below), whose sum is σ = 4197760. Its totient is φ = 404352.

The previous prime is 1415977. The next prime is 1415989. The reversal of 1415988 is 8895141.

It is a super-2 number, since 2×1415988² = 4010044032288, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1415989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181 + ... + 1692.

2^1415988 is an apocalyptic number.

1415988 is a gapful number since it is divisible by the number (18) 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 1415988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2098880).

1415988 is an abundant number, since it is smaller than the sum of its proper divisors (2781772).

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

1415988 is a wasteful number, since it uses less digits than its factorization.

1415988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893 (or 1885 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 1415988 is about 1189.9529402460. The cubic root of 1415988 is about 112.2931309460.

The spelling of 1415988 in words is "one million, four hundred fifteen thousand, nine hundred eighty-eight".