1988746 has 16 divisors (see below), whose sum is σ = 3104640. Its totient is φ = 954720.

The previous prime is 1988729. The next prime is 1988759. The reversal of 1988746 is 6478891.

It is a super-2 number, since 2×1988746² = 7910221305032, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6325 + ... + 6631.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

2^1988746 is an apocalyptic number.

1988746 is a deficient number, since it is larger than the sum of its proper divisors (1115894).

1988746 is a wasteful number, since it uses less digits than its factorization.

1988746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429.

The product of its digits is 96768, while the sum is 43.

The square root of 1988746 is about 1410.2290594084. The cubic root of 1988746 is about 125.7553411510.

The spelling of 1988746 in words is "one million, nine hundred eighty-eight thousand, seven hundred forty-six".