1405928 has 32 divisors (see below), whose sum is σ = 2782560. Its totient is φ = 665280.

The previous prime is 1405927. The next prime is 1405939. The reversal of 1405928 is 8295041.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1405928.

It is not an unprimeable number, because it can be changed into a prime (1405927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20951 + ... + 21017.

It is an arithmetic number, because the mean of its divisors is an integer number (86955).

2^1405928 is an apocalyptic number.

It is an amenable number.

1405928 is a deficient number, since it is larger than the sum of its proper divisors (1376632).

1405928 is a wasteful number, since it uses less digits than its factorization.

1405928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1405928 is about 1185.7183476695. The cubic root of 1405928 is about 112.0265668270.

The spelling of 1405928 in words is "one million, four hundred five thousand, nine hundred twenty-eight".