1978752 has 32 divisors (see below), whose sum is σ = 5257080. Its totient is φ = 659456.

The previous prime is 1978741. The next prime is 1978763. The reversal of 1978752 is 2578791.

It is an interprime number because it is at equal distance from previous prime (1978741) and next prime (1978763).

It is a tau number, because it is divible by the number of its divisors (32).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1978752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2193 + ... + 2960.

2^1978752 is an apocalyptic number.

1978752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1978752 is an abundant number, since it is smaller than the sum of its proper divisors (3278328).

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

1978752 is an equidigital number, since it uses as much as digits as its factorization.

1978752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170 (or 5158 counting only the distinct ones).

The product of its digits is 35280, while the sum is 39.

The square root of 1978752 is about 1406.6812005568. The cubic root of 1978752 is about 125.5443354836.

Adding to 1978752 its sum of digits (39), we get a palindrome (1978791).

The spelling of 1978752 in words is "one million, nine hundred seventy-eight thousand, seven hundred fifty-two".