1521928 has 16 divisors (see below), whose sum is σ = 2882880. Its totient is φ = 753168.

The previous prime is 1521913. The next prime is 1521937. The reversal of 1521928 is 8291251.

It is a super-3 number, since 3×1521928³ = 10575564933377312256, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1521896 and 1521905.

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, 100 + ... + 1747.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

2^1521928 is an apocalyptic number.

It is an amenable number.

1521928 is a deficient number, since it is larger than the sum of its proper divisors (1360952).

1521928 is a wasteful number, since it uses less digits than its factorization.

1521928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 1952 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 1521928 is about 1233.6644600539. The cubic root of 1521928 is about 115.0265345198.

It can be divided in two parts, 152 and 1928, that added together give a triangular number (2080 = T₆₄).

The spelling of 1521928 in words is "one million, five hundred twenty-one thousand, nine hundred twenty-eight".