390190072 has 8 divisors (see below), whose sum is σ = 731606400. Its totient is φ = 195095032.

The previous prime is 390190067. The next prime is 390190079. The reversal of 390190072 is 270091093.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390190079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24386872 + ... + 24386887.

It is an arithmetic number, because the mean of its divisors is an integer number (91450800).

Almost surely, 2^390190072 is an apocalyptic number.

It is an amenable number.

390190072 is a deficient number, since it is larger than the sum of its proper divisors (341416328).

390190072 is a wasteful number, since it uses less digits than its factorization.

390190072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48773765 (or 48773761 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 390190072 is about 19753.2294068590. The cubic root of 390190072 is about 730.7330298663.

The spelling of 390190072 in words is "three hundred ninety million, one hundred ninety thousand, seventy-two".