38500020 has 72 divisors (see below), whose sum is σ = 125774376. Its totient is φ = 9476352.

The previous prime is 38500001. The next prime is 38500039. The reversal of 38500020 is 2000583.

38500020 = T₄₀₉ + T₄₁₀ + ... + T₆₆₈.

It is an interprime number because it is at equal distance from previous prime (38500001) and next prime (38500039).

It can be written as a sum of positive squares in 4 ways, for example, as 5253264 + 33246756 = 2292^2 + 5766^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 38499966 and 38500002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5887 + ... + 10566.

Almost surely, 2^38500020 is an apocalyptic number.

38500020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38500020 is an abundant number, since it is smaller than the sum of its proper divisors (87274356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38500020 is a wasteful number, since it uses less digits than its factorization.

38500020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16481 (or 16476 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 38500020 is about 6204.8384346411. The cubic root of 38500020 is about 337.6657293049.

The spelling of 38500020 in words is "thirty-eight million, five hundred thousand, twenty".