381214290 has 64 divisors (see below), whose sum is σ = 1019744640. Its totient is φ = 90639360.

The previous prime is 381214261. The next prime is 381214303. The reversal of 381214290 is 92412183.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9981 + ... + 29360.

It is an arithmetic number, because the mean of its divisors is an integer number (15933510).

Almost surely, 2^381214290 is an apocalyptic number.

381214290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381214290 is an abundant number, since it is smaller than the sum of its proper divisors (638530350).

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

381214290 is a wasteful number, since it uses less digits than its factorization.

381214290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39387.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 381214290 is about 19524.7097289563. The cubic root of 381214290 is about 725.0863408864.

The spelling of 381214290 in words is "three hundred eighty-one million, two hundred fourteen thousand, two hundred ninety".