662050728 has 48 divisors (see below), whose sum is σ = 1808944020. Its totient is φ = 218727936.

The previous prime is 662050709. The next prime is 662050777. The reversal of 662050728 is 827050266.

662050728 is a `hidden beast` number, since 6 + 620 + 5 + 0 + 7 + 28 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 657307044 + 4743684 = 25638^2 + 2178^2 .

It is a super-2 number, since 2×662050728² = 876622332890659968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 662050692 and 662050701.

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, 32551 + ... + 48822.

Almost surely, 2^662050728 is an apocalyptic number.

It is an amenable number.

662050728 is an abundant number, since it is smaller than the sum of its proper divisors (1146893292).

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

662050728 is a wasteful number, since it uses less digits than its factorization.

662050728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81498 (or 81491 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 662050728 is about 25730.3464415075. The cubic root of 662050728 is about 871.5595965102.

The spelling of 662050728 in words is "six hundred sixty-two million, fifty thousand, seven hundred twenty-eight".