28622434 has 16 divisors (see below), whose sum is σ = 44684640. Its totient is φ = 13739040.

The previous prime is 28622431. The next prime is 28622437. The reversal of 28622434 is 43422682.

It is an interprime number because it is at equal distance from previous prime (28622431) and next prime (28622437).

It is a junction number, because it is equal to n+sod(n) for n = 28622396 and 28622405.

It is not an unprimeable number, because it can be changed into a prime (28622431) 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, 2254 + ... + 7894.

It is an arithmetic number, because the mean of its divisors is an integer number (2792790).

Almost surely, 2^28622434 is an apocalyptic number.

28622434 is a deficient number, since it is larger than the sum of its proper divisors (16062206).

28622434 is a wasteful number, since it uses less digits than its factorization.

28622434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745.

The product of its digits is 18432, while the sum is 31.

The square root of 28622434 is about 5349.9938317721. The cubic root of 28622434 is about 305.8925178212.

The spelling of 28622434 in words is "twenty-eight million, six hundred twenty-two thousand, four hundred thirty-four".