28629438 has 32 divisors (see below), whose sum is σ = 59715360. Its totient is φ = 9139200.

The previous prime is 28629437. The next prime is 28629451. The reversal of 28629438 is 83492682.

It is a self number, because there is not a number n which added to its sum of digits gives 28629438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28629437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23238 + ... + 24438.

It is an arithmetic number, because the mean of its divisors is an integer number (1866105).

Almost surely, 2^28629438 is an apocalyptic number.

28629438 is an abundant number, since it is smaller than the sum of its proper divisors (31085922).

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

28629438 is a wasteful number, since it uses less digits than its factorization.

28629438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its digits is 165888, while the sum is 42.

The square root of 28629438 is about 5350.6483719265. The cubic root of 28629438 is about 305.9174667414.

The spelling of 28629438 in words is "twenty-eight million, six hundred twenty-nine thousand, four hundred thirty-eight".