15428234 has 4 divisors (see below), whose sum is σ = 23142354. Its totient is φ = 7714116.

The previous prime is 15428221. The next prime is 15428249. The reversal of 15428234 is 43282451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43282451 = 1013 ⋅42727.

It can be written as a sum of positive squares in only one way, i.e., 12355225 + 3073009 = 3515^2 + 1753^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15428197 and 15428206.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3857057 + ... + 3857060.

Almost surely, 2^15428234 is an apocalyptic number.

15428234 is a deficient number, since it is larger than the sum of its proper divisors (7714120).

15428234 is an equidigital number, since it uses as much as digits as its factorization.

15428234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714119.

The product of its digits is 7680, while the sum is 29.

The square root of 15428234 is about 3927.8790714583. The cubic root of 15428234 is about 248.9461451353.

The spelling of 15428234 in words is "fifteen million, four hundred twenty-eight thousand, two hundred thirty-four".