28629330 has 32 divisors (see below), whose sum is σ = 69683328. Its totient is φ = 7526400.

The previous prime is 28629329. The next prime is 28629331. The reversal of 28629330 is 3392682.

It is an interprime number because it is at equal distance from previous prime (28629329) and next prime (28629331).

It is a junction number, because it is equal to n+sod(n) for n = 28629291 and 28629300.

It is not an unprimeable number, because it can be changed into a prime (28629331) 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 15 ways as a sum of consecutive naturals, for example, 4591 + ... + 8850.

It is an arithmetic number, because the mean of its divisors is an integer number (2177604).

Almost surely, 2^28629330 is an apocalyptic number.

28629330 is an abundant number, since it is smaller than the sum of its proper divisors (41053998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28629330 is a wasteful number, since it uses less digits than its factorization.

28629330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13522.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 28629330 is about 5350.6382796822. The cubic root of 28629330 is about 305.9170820659.

The spelling of 28629330 in words is "twenty-eight million, six hundred twenty-nine thousand, three hundred thirty".