381695040 has 84 divisors (see below), whose sum is σ = 1312881804. Its totient is φ = 101784576.

The previous prime is 381695023. The next prime is 381695087. The reversal of 381695040 is 40596183.

It can be written as a sum of positive squares in 2 ways, for example, as 183223296 + 198471744 = 13536^2 + 14088^2 .

It is a super-2 number, since 2×381695040² = 291382207121203200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 381694986 and 381695004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63387 + ... + 69146.

Almost surely, 2^381695040 is an apocalyptic number.

381695040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381695040 is an abundant number, since it is smaller than the sum of its proper divisors (931186764).

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

381695040 is a wasteful number, since it uses less digits than its factorization.

381695040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132556 (or 132543 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 381695040 is about 19537.0171725369. The cubic root of 381695040 is about 725.3910153930.

The spelling of 381695040 in words is "three hundred eighty-one million, six hundred ninety-five thousand, forty".