1405190128 has 20 divisors (see below), whose sum is σ = 2816438040. Its totient is φ = 678367424.

The previous prime is 1405190071. The next prime is 1405190167. The reversal of 1405190128 is 8210915041.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1405190128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1513750 + ... + 1514677.

It is an arithmetic number, because the mean of its divisors is an integer number (140821902).

Almost surely, 2^1405190128 is an apocalyptic number.

It is an amenable number.

1405190128 is an abundant number, since it is smaller than the sum of its proper divisors (1411247912).

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

1405190128 is a wasteful number, since it uses less digits than its factorization.

1405190128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028464 (or 3028458 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1405190128 is about 37485.8657096245. The cubic root of 1405190128 is about 1120.0696512806.

The spelling of 1405190128 in words is "one billion, four hundred five million, one hundred ninety thousand, one hundred twenty-eight".