28619934 has 16 divisors (see below), whose sum is σ = 65417088. Its totient is φ = 8177112.

The previous prime is 28619911. The next prime is 28619939. The reversal of 28619934 is 43991682.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 681427 = 28619934 / (2 + 8 + 6 + 1 + 9 + 9 + 3 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28619939) 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, 340672 + ... + 340755.

It is an arithmetic number, because the mean of its divisors is an integer number (4088568).

Almost surely, 2^28619934 is an apocalyptic number.

28619934 is an abundant number, since it is smaller than the sum of its proper divisors (36797154).

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

28619934 is a wasteful number, since it uses less digits than its factorization.

28619934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681439.

The product of its digits is 93312, while the sum is 42.

The square root of 28619934 is about 5349.7601815409. The cubic root of 28619934 is about 305.8836115956.

The spelling of 28619934 in words is "twenty-eight million, six hundred nineteen thousand, nine hundred thirty-four".