28401370 has 16 divisors (see below), whose sum is σ = 51321600. Its totient is φ = 11316304.

The previous prime is 28401341. The next prime is 28401379. The reversal of 28401370 is 7310482.

It is not an unprimeable number, because it can be changed into a prime (28401379) 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, 2770 + ... + 8029.

It is an arithmetic number, because the mean of its divisors is an integer number (3207600).

Almost surely, 2^28401370 is an apocalyptic number.

28401370 is a deficient number, since it is larger than the sum of its proper divisors (22920230).

28401370 is a wasteful number, since it uses less digits than its factorization.

28401370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11069.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28401370 is about 5329.2935741991. The cubic root of 28401370 is about 305.1029662207.

The spelling of 28401370 in words is "twenty-eight million, four hundred one thousand, three hundred seventy".