28103948 has 6 divisors (see below), whose sum is σ = 49181916. Its totient is φ = 14051972.

The previous prime is 28103947. The next prime is 28104007. The reversal of 28103948 is 84930182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28103947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3512990 + ... + 3512997.

It is an arithmetic number, because the mean of its divisors is an integer number (8196986).

Almost surely, 2^28103948 is an apocalyptic number.

It is an amenable number.

28103948 is a deficient number, since it is larger than the sum of its proper divisors (21077968).

28103948 is a wasteful number, since it uses less digits than its factorization.

28103948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7025991 (or 7025989 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28103948 is about 5301.3156857520. The cubic root of 28103948 is about 304.0342037923.

The spelling of 28103948 in words is "twenty-eight million, one hundred three thousand, nine hundred forty-eight".