381770420 has 24 divisors (see below), whose sum is σ = 843914400. Its totient is φ = 144670752.

The previous prime is 381770419. The next prime is 381770443. The reversal of 381770420 is 24077183.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501950 + ... + 502709.

It is an arithmetic number, because the mean of its divisors is an integer number (35163100).

Almost surely, 2^381770420 is an apocalyptic number.

It is an amenable number.

381770420 is an abundant number, since it is smaller than the sum of its proper divisors (462143980).

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

381770420 is a wasteful number, since it uses less digits than its factorization.

381770420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004687 (or 1004685 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 381770420 is about 19538.9462356597. The cubic root of 381770420 is about 725.4387641364.

The spelling of 381770420 in words is "three hundred eighty-one million, seven hundred seventy thousand, four hundred twenty".