28419378 has 24 divisors (see below), whose sum is σ = 61549488. Its totient is φ = 8744112.

The previous prime is 28419373. The next prime is 28419397. The reversal of 28419378 is 87391482.

It is a super-2 number, since 2×28419378² = 1615322091813768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28419371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13000 + ... + 15027.

It is an arithmetic number, because the mean of its divisors is an integer number (2564562).

Almost surely, 2^28419378 is an apocalyptic number.

28419378 is an abundant number, since it is smaller than the sum of its proper divisors (33130110).

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

28419378 is a wasteful number, since it uses less digits than its factorization.

28419378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28058 (or 28045 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 28419378 is about 5330.9828362132. The cubic root of 28419378 is about 305.1674365074.

The spelling of 28419378 in words is "twenty-eight million, four hundred nineteen thousand, three hundred seventy-eight".