28219952 has 10 divisors (see below), whose sum is σ = 54676188. Its totient is φ = 14109968.

The previous prime is 28219943. The next prime is 28219957. The reversal of 28219952 is 25991282.

It is not an unprimeable number, because it can be changed into a prime (28219957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 881858 + ... + 881889.

Almost surely, 2^28219952 is an apocalyptic number.

It is an amenable number.

28219952 is a deficient number, since it is larger than the sum of its proper divisors (26456236).

28219952 is a wasteful number, since it uses less digits than its factorization.

28219952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763755 (or 1763749 counting only the distinct ones).

The product of its digits is 25920, while the sum is 38.

The square root of 28219952 is about 5312.2454762558. The cubic root of 28219952 is about 304.4519478065.

The spelling of 28219952 in words is "twenty-eight million, two hundred nineteen thousand, nine hundred fifty-two".