28514478 has 32 divisors (see below), whose sum is σ = 60278400. Its totient is φ = 8967456.

The previous prime is 28514471. The next prime is 28514489. The reversal of 28514478 is 87441582.

It is a happy number.

It is a super-2 number, since 2×28514478² = 1626150911224968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28514471) 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, 44025 + ... + 44667.

It is an arithmetic number, because the mean of its divisors is an integer number (1883700).

Almost surely, 2^28514478 is an apocalyptic number.

28514478 is an abundant number, since it is smaller than the sum of its proper divisors (31763922).

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

28514478 is a wasteful number, since it uses less digits than its factorization.

28514478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its digits is 71680, while the sum is 39.

The square root of 28514478 is about 5339.8949427868. The cubic root of 28514478 is about 305.5074522965.

The spelling of 28514478 in words is "twenty-eight million, five hundred fourteen thousand, four hundred seventy-eight".