28992104 has 8 divisors (see below), whose sum is σ = 54360210. Its totient is φ = 14496048.

The previous prime is 28992101. The next prime is 28992107. The reversal of 28992104 is 40129982.

It is an interprime number because it is at equal distance from previous prime (28992101) and next prime (28992107).

It can be written as a sum of positive squares in only one way, i.e., 16728100 + 12264004 = 4090^2 + 3502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28992101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1811999 + ... + 1812014.

Almost surely, 2^28992104 is an apocalyptic number.

It is an amenable number.

28992104 is a deficient number, since it is larger than the sum of its proper divisors (25368106).

28992104 is a wasteful number, since it uses less digits than its factorization.

28992104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624019 (or 3624015 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 28992104 is about 5384.4316320295. The cubic root of 28992104 is about 307.2037961138.

The spelling of 28992104 in words is "twenty-eight million, nine hundred ninety-two thousand, one hundred four".