1764672740 has 12 divisors (see below), whose sum is σ = 3705812796. Its totient is φ = 705869088.

The previous prime is 1764672739. The next prime is 1764672761. The reversal of 1764672740 is 472764671.

It can be written as a sum of positive squares in 2 ways, for example, as 634233856 + 1130438884 = 25184^2 + 33622^2 .

It is a super-2 number, since 2×1764672740² = 6228139758598215200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1764672691 and 1764672700.

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, 44116799 + ... + 44116838.

It is an arithmetic number, because the mean of its divisors is an integer number (308817733).

Almost surely, 2^1764672740 is an apocalyptic number.

1764672740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1764672740 is an abundant number, since it is smaller than the sum of its proper divisors (1941140056).

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

1764672740 is a wasteful number, since it uses less digits than its factorization.

1764672740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88233646 (or 88233644 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 1764672740 is about 42008.0080460857. The cubic root of 1764672740 is about 1208.4297049203.

The spelling of 1764672740 in words is "one billion, seven hundred sixty-four million, six hundred seventy-two thousand, seven hundred forty".