1977335328 has 48 divisors (see below), whose sum is σ = 5199495840. Its totient is φ = 657970176.

The previous prime is 1977335317. The next prime is 1977335329. The reversal of 1977335328 is 8235337791.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1977335329) 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, 38808 + ... + 73896.

It is an arithmetic number, because the mean of its divisors is an integer number (108322830).

Almost surely, 2^1977335328 is an apocalyptic number.

It is an amenable number.

1977335328 is an abundant number, since it is smaller than the sum of its proper divisors (3222160512).

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

1977335328 is a wasteful number, since it uses less digits than its factorization.

1977335328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35689 (or 35681 counting only the distinct ones).

The product of its digits is 952560, while the sum is 48.

The square root of 1977335328 is about 44467.2388169088. The cubic root of 1977335328 is about 1255.1436750270.

The spelling of 1977335328 in words is "one billion, nine hundred seventy-seven million, three hundred thirty-five thousand, three hundred twenty-eight".