38723405 has 16 divisors (see below), whose sum is σ = 53581824. Its totient is φ = 26315520.

The previous prime is 38723369. The next prime is 38723429. The reversal of 38723405 is 50432783.

It is a happy number.

It is not a de Polignac number, because 38723405 - 2⁶ = 38723341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 941 + ... + 8850.

It is an arithmetic number, because the mean of its divisors is an integer number (3348864).

Almost surely, 2^38723405 is an apocalyptic number.

38723405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38723405 is a deficient number, since it is larger than the sum of its proper divisors (14858419).

38723405 is a wasteful number, since it uses less digits than its factorization.

38723405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9916.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 38723405 is about 6222.8132705393. The cubic root of 38723405 is about 338.3175388508.

The spelling of 38723405 in words is "thirty-eight million, seven hundred twenty-three thousand, four hundred five".