207240028 has 24 divisors (see below), whose sum is σ = 378943488. Its totient is φ = 98982576.

The previous prime is 207240023. The next prime is 207240073. The reversal of 207240028 is 820042702.

It is a junction number, because it is equal to n+sod(n) for n = 207239984 and 207240011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207240023) 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, 130125 + ... + 131707.

It is an arithmetic number, because the mean of its divisors is an integer number (15789312).

Almost surely, 2^207240028 is an apocalyptic number.

It is an amenable number.

207240028 is a deficient number, since it is larger than the sum of its proper divisors (171703460).

207240028 is a wasteful number, since it uses less digits than its factorization.

207240028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033 (or 3031 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 207240028 is about 14395.8337028461. The cubic root of 207240028 is about 591.7767259740.

The spelling of 207240028 in words is "two hundred seven million, two hundred forty thousand, twenty-eight".