1978032 has 90 divisors (see below), whose sum is σ = 6156228. Its totient is φ = 545664.

The previous prime is 1978027. The next prime is 1978037. The reversal of 1978032 is 2308791.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1978027) and next prime (1978037).

It is a super-2 number, since 2×1978032² = 7825221186048, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1978037) 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 17 ways as a sum of consecutive naturals, for example, 68194 + ... + 68222.

2^1978032 is an apocalyptic number.

1978032 is a gapful number since it is divisible by the number (12) 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 1978032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3078114).

1978032 is an abundant number, since it is smaller than the sum of its proper divisors (4178196).

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

1978032 is a wasteful number, since it uses less digits than its factorization.

1978032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1978032 is about 1406.4252557459. The cubic root of 1978032 is about 125.5291065435.

The spelling of 1978032 in words is "one million, nine hundred seventy-eight thousand, thirty-two".