1978030 has 8 divisors (see below), whose sum is σ = 3560472. Its totient is φ = 791208.

The previous prime is 1978027. The next prime is 1978037. The reversal of 1978030 is 308791.

1978030 = T₈₈₇ + T₈₈₈ + ... + T₈₉₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1978030.

It is a congruent 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98892 + ... + 98911.

It is an arithmetic number, because the mean of its divisors is an integer number (445059).

2^1978030 is an apocalyptic number.

1978030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1978030 is a deficient number, since it is larger than the sum of its proper divisors (1582442).

1978030 is a wasteful number, since it uses less digits than its factorization.

1978030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197810.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1978030 is about 1406.4245447232. The cubic root of 1978030 is about 125.5290642357.

The spelling of 1978030 in words is "one million, nine hundred seventy-eight thousand, thirty".