38628511 has 4 divisors (see below), whose sum is σ = 39874624. Its totient is φ = 37382400.

The previous prime is 38628479. The next prime is 38628521. The reversal of 38628511 is 11582683.

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

It is a cyclic number.

It is not a de Polignac number, because 38628511 - 2⁵ = 38628479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38628521) 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, 623010 + ... + 623071.

It is an arithmetic number, because the mean of its divisors is an integer number (9968656).

Almost surely, 2^38628511 is an apocalyptic number.

38628511 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

38628511 is a deficient number, since it is larger than the sum of its proper divisors (1246113).

38628511 is a wasteful number, since it uses less digits than its factorization.

38628511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246112.

The product of its digits is 11520, while the sum is 34.

The square root of 38628511 is about 6215.1839071744. The cubic root of 38628511 is about 338.0409570713.

The spelling of 38628511 in words is "thirty-eight million, six hundred twenty-eight thousand, five hundred eleven".