407872634 has 8 divisors (see below), whose sum is σ = 658871220. Its totient is φ = 188248896.

The previous prime is 407872603. The next prime is 407872637. The reversal of 407872634 is 436278704.

It can be written as a sum of positive squares in 2 ways, for example, as 406143409 + 1729225 = 20153^2 + 1315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 407872591 and 407872600.

It is not an unprimeable number, because it can be changed into a prime (407872637) 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, 7843679 + ... + 7843730.

Almost surely, 2^407872634 is an apocalyptic number.

407872634 is a deficient number, since it is larger than the sum of its proper divisors (250998586).

407872634 is a wasteful number, since it uses less digits than its factorization.

407872634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15687424.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 407872634 is about 20195.8568523348. The cubic root of 407872634 is about 741.6087680651.

The spelling of 407872634 in words is "four hundred seven million, eight hundred seventy-two thousand, six hundred thirty-four".