1988470 has 16 divisors (see below), whose sum is σ = 3904848. Its totient is φ = 723040.

The previous prime is 1988453. The next prime is 1988471. The reversal of 1988470 is 748891.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8929 + ... + 9148.

It is an arithmetic number, because the mean of its divisors is an integer number (244053).

2^1988470 is an apocalyptic number.

1988470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1988470 is a deficient number, since it is larger than the sum of its proper divisors (1916378).

1988470 is a wasteful number, since it uses less digits than its factorization.

1988470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18095.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1988470 is about 1410.1311995697. The cubic root of 1988470 is about 125.7495234012.

It can be divided in two parts, 198 and 8470, that added together give a palindrome (8668).

The spelling of 1988470 in words is "one million, nine hundred eighty-eight thousand, four hundred seventy".