28766978429 has 8 divisors (see below), whose sum is σ = 33367242048. Its totient is φ = 24289388640.

The previous prime is 28766978423. The next prime is 28766978447. The reversal of 28766978429 is 92487966782.

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

It is a cyclic number.

It is not a de Polignac number, because 28766978429 - 2²⁴ = 28750201213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28766978423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30667952 + ... + 30668889.

It is an arithmetic number, because the mean of its divisors is an integer number (4170905256).

Almost surely, 2^28766978429 is an apocalyptic number.

It is an amenable number.

28766978429 is a deficient number, since it is larger than the sum of its proper divisors (4600263619).

28766978429 is an equidigital number, since it uses as much as digits as its factorization.

28766978429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61336915.

The product of its digits is 146313216, while the sum is 68.

The spelling of 28766978429 in words is "twenty-eight billion, seven hundred sixty-six million, nine hundred seventy-eight thousand, four hundred twenty-nine".