28219672 has 32 divisors (see below), whose sum is σ = 58826880. Its totient is φ = 12602880.

The previous prime is 28219661. The next prime is 28219673. The reversal of 28219672 is 27691282.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28219673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153 + ... + 7600.

It is an arithmetic number, because the mean of its divisors is an integer number (1838340).

Almost surely, 2^28219672 is an apocalyptic number.

It is an amenable number.

28219672 is an abundant number, since it is smaller than the sum of its proper divisors (30607208).

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

28219672 is a wasteful number, since it uses less digits than its factorization.

28219672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8803 (or 8799 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 28219672 is about 5312.2191219866. The cubic root of 28219672 is about 304.4509408732.

The spelling of 28219672 in words is "twenty-eight million, two hundred nineteen thousand, six hundred seventy-two".