28726270 has 16 divisors (see below), whose sum is σ = 51791040. Its totient is φ = 11471904.

The previous prime is 28726267. The next prime is 28726273. The reversal of 28726270 is 7262782.

It is an interprime number because it is at equal distance from previous prime (28726267) and next prime (28726273).

It is a super-2 number, since 2×28726270² = 1650397176225800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28726273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5371 + ... + 9289.

It is an arithmetic number, because the mean of its divisors is an integer number (3236940).

Almost surely, 2^28726270 is an apocalyptic number.

28726270 is a deficient number, since it is larger than the sum of its proper divisors (23064770).

28726270 is a wasteful number, since it uses less digits than its factorization.

28726270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4659.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 28726270 is about 5359.6893566698. The cubic root of 28726270 is about 306.2619753751.

The spelling of 28726270 in words is "twenty-eight million, seven hundred twenty-six thousand, two hundred seventy".