39628631 has 8 divisors (see below), whose sum is σ = 45544320. Its totient is φ = 33776568.

The previous prime is 39628613. The next prime is 39628637. The reversal of 39628631 is 13682693.

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

It is not a de Polignac number, because 39628631 - 2¹⁴ = 39612247 is a prime.

It is a super-2 number, since 2×39628631² = 3140856789868322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39628637) 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, 14561 + ... + 17066.

It is an arithmetic number, because the mean of its divisors is an integer number (5693040).

Almost surely, 2^39628631 is an apocalyptic number.

39628631 is a deficient number, since it is larger than the sum of its proper divisors (5915689).

39628631 is a wasteful number, since it uses less digits than its factorization.

39628631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31813.

The product of its digits is 46656, while the sum is 38.

The square root of 39628631 is about 6295.1275602644. The cubic root of 39628631 is about 340.9335101398.

The spelling of 39628631 in words is "thirty-nine million, six hundred twenty-eight thousand, six hundred thirty-one".