1927998 has 24 divisors (see below), whose sum is σ = 4359888. Its totient is φ = 614592.

The previous prime is 1927997. The next prime is 1928011. The reversal of 1927998 is 8997291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1927993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1915 + ... + 2742.

It is an arithmetic number, because the mean of its divisors is an integer number (181662).

2^1927998 is an apocalyptic number.

1927998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1927998 is an abundant number, since it is smaller than the sum of its proper divisors (2431890).

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

1927998 is a wasteful number, since it uses less digits than its factorization.

1927998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688 (or 4685 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 1927998 is about 1388.5236764276. The cubic root of 1927998 is about 124.4616420276.

The spelling of 1927998 in words is "one million, nine hundred twenty-seven thousand, nine hundred ninety-eight".