38213290 has 8 divisors (see below), whose sum is σ = 68783940. Its totient is φ = 15285312.

The previous prime is 38213269. The next prime is 38213291. The reversal of 38213290 is 9231283.

It can be written as a sum of positive squares in 2 ways, for example, as 35533521 + 2679769 = 5961^2 + 1637^2 .

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

It is not an unprimeable number, because it can be changed into a prime (38213291) 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, 1910655 + ... + 1910674.

Almost surely, 2^38213290 is an apocalyptic number.

38213290 is a deficient number, since it is larger than the sum of its proper divisors (30570650).

38213290 is a wasteful number, since it uses less digits than its factorization.

38213290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821336.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 38213290 is about 6181.6898984016. The cubic root of 38213290 is about 336.8253812755.

It can be divided in two parts, 38213 and 290, that added together give a triangular number (38503 = T₂₇₇).

The spelling of 38213290 in words is "thirty-eight million, two hundred thirteen thousand, two hundred ninety".