390081132 has 36 divisors (see below), whose sum is σ = 1126901776. Its totient is φ = 111451680.

The previous prime is 390081103. The next prime is 390081149. The reversal of 390081132 is 231180093.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 390081096 and 390081105.

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, 773719 + ... + 774222.

Almost surely, 2^390081132 is an apocalyptic number.

It is an amenable number.

390081132 is an abundant number, since it is smaller than the sum of its proper divisors (736820644).

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

390081132 is a wasteful number, since it uses less digits than its factorization.

390081132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547958 (or 1547953 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 390081132 is about 19750.4716905698. The cubic root of 390081132 is about 730.6650173158.

The spelling of 390081132 in words is "three hundred ninety million, eighty-one thousand, one hundred thirty-two".