32978013 has 4 divisors (see below), whose sum is σ = 43970688. Its totient is φ = 21985340.

The previous prime is 32977999. The next prime is 32978027. The reversal of 32978013 is 31087923.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31087923 = 3 ⋅10362641.

It is an interprime number because it is at equal distance from previous prime (32977999) and next prime (32978027).

It is a cyclic number.

It is not a de Polignac number, because 32978013 - 2⁶ = 32977949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32978093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5496333 + ... + 5496338.

It is an arithmetic number, because the mean of its divisors is an integer number (10992672).

Almost surely, 2^32978013 is an apocalyptic number.

It is an amenable number.

32978013 is a deficient number, since it is larger than the sum of its proper divisors (10992675).

32978013 is a wasteful number, since it uses less digits than its factorization.

32978013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10992674.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 32978013 is about 5742.6486049557. The cubic root of 32978013 is about 320.6821807512.

The spelling of 32978013 in words is "thirty-two million, nine hundred seventy-eight thousand, thirteen".