407268157 has 4 divisors (see below), whose sum is σ = 408853116. Its totient is φ = 405683200.

The previous prime is 407268151. The next prime is 407268161. The reversal of 407268157 is 751862704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 394062201 + 13205956 = 19851^2 + 3634^2 .

It is a cyclic number.

It is not a de Polignac number, because 407268157 - 2³ = 407268149 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407268151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792094 + ... + 792607.

It is an arithmetic number, because the mean of its divisors is an integer number (102213279).

Almost surely, 2^407268157 is an apocalyptic number.

It is an amenable number.

407268157 is a deficient number, since it is larger than the sum of its proper divisors (1584959).

407268157 is a wasteful number, since it uses less digits than its factorization.

407268157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584958.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 407268157 is about 20180.8859319902. The cubic root of 407268157 is about 741.2422262862.

The spelling of 407268157 in words is "four hundred seven million, two hundred sixty-eight thousand, one hundred fifty-seven".