28449070 has 16 divisors (see below), whose sum is σ = 55147680. Its totient is φ = 10504224.

The previous prime is 28449059. The next prime is 28449073. The reversal of 28449070 is 7094482.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28449073) 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, 109290 + ... + 109549.

It is an arithmetic number, because the mean of its divisors is an integer number (3446730).

Almost surely, 2^28449070 is an apocalyptic number.

28449070 is a deficient number, since it is larger than the sum of its proper divisors (26698610).

28449070 is a wasteful number, since it uses less digits than its factorization.

28449070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218859.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28449070 is about 5333.7669615385. The cubic root of 28449070 is about 305.2736771361.

The spelling of 28449070 in words is "twenty-eight million, four hundred forty-nine thousand, seventy".