38198405 has 32 divisors (see below), whose sum is σ = 56795904. Its totient is φ = 24062976.

The previous prime is 38198401. The next prime is 38198431. The reversal of 38198405 is 50489183.

It is not a de Polignac number, because 38198405 - 2² = 38198401 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 (38198401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24839 + ... + 26331.

It is an arithmetic number, because the mean of its divisors is an integer number (1774872).

Almost surely, 2^38198405 is an apocalyptic number.

38198405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38198405 is a deficient number, since it is larger than the sum of its proper divisors (18597499).

38198405 is a wasteful number, since it uses less digits than its factorization.

38198405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 38198405 is about 6180.4858223282. The cubic root of 38198405 is about 336.7816417203.

The spelling of 38198405 in words is "thirty-eight million, one hundred ninety-eight thousand, four hundred five".