38881290 has 32 divisors (see below), whose sum is σ = 106646400. Its totient is φ = 8887104.

The previous prime is 38881279. The next prime is 38881291. The reversal of 38881290 is 9218883.

It is not an unprimeable number, because it can be changed into a prime (38881291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92365 + ... + 92784.

It is an arithmetic number, because the mean of its divisors is an integer number (3332700).

Almost surely, 2^38881290 is an apocalyptic number.

38881290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38881290 is an abundant number, since it is smaller than the sum of its proper divisors (67765110).

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

38881290 is a wasteful number, since it uses less digits than its factorization.

38881290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185166.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 38881290 is about 6235.4863483132. The cubic root of 38881290 is about 338.7767170733.

The spelling of 38881290 in words is "thirty-eight million, eight hundred eighty-one thousand, two hundred ninety".