1672764720 has 80 divisors (see below), whose sum is σ = 5656995072. Its totient is φ = 405518080.

The previous prime is 1672764713. The next prime is 1672764761. The reversal of 1672764720 is 274672761.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314172 + ... + 319451.

Almost surely, 2^1672764720 is an apocalyptic number.

1672764720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1672764720 is an abundant number, since it is smaller than the sum of its proper divisors (3984230352).

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

1672764720 is a wasteful number, since it uses less digits than its factorization.

1672764720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633650 (or 633644 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 1672764720 is about 40899.4464510218. The cubic root of 1672764720 is about 1187.0753498437.

The spelling of 1672764720 in words is "one billion, six hundred seventy-two million, seven hundred sixty-four thousand, seven hundred twenty".