10783978 has 4 divisors (see below), whose sum is σ = 16175970. Its totient is φ = 5391988.

The previous prime is 10783973. The next prime is 10783991. The reversal of 10783978 is 87938701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87938701 = 29 ⋅3032369.

It can be written as a sum of positive squares in only one way, i.e., 10478169 + 305809 = 3237^2 + 553^2 .

It is not an unprimeable number, because it can be changed into a prime (10783973) 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 as a sum of consecutive naturals, namely, 2695993 + ... + 2695996.

Almost surely, 2^10783978 is an apocalyptic number.

10783978 is a deficient number, since it is larger than the sum of its proper divisors (5391992).

10783978 is an equidigital number, since it uses as much as digits as its factorization.

10783978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391991.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 10783978 is about 3283.8967706065. The cubic root of 10783978 is about 220.9325292420.

The spelling of 10783978 in words is "ten million, seven hundred eighty-three thousand, nine hundred seventy-eight".