1173620640 has 48 divisors (see below), whose sum is σ = 3696906528. Its totient is φ = 312965376.

The previous prime is 1173620639. The next prime is 1173620647. The reversal of 1173620640 is 460263711.

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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 1173620598 and 1173620607.

It is not an unprimeable number, because it can be changed into a prime (1173620647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222042 + ... + 1223001.

It is an arithmetic number, because the mean of its divisors is an integer number (77018886).

Almost surely, 2^1173620640 is an apocalyptic number.

1173620640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1173620640 is an abundant number, since it is smaller than the sum of its proper divisors (2523285888).

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

1173620640 is a wasteful number, since it uses less digits than its factorization.

1173620640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445061 (or 2445053 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1173620640 is about 34258.1470602250. The cubic root of 1173620640 is about 1054.8140669464.

The spelling of 1173620640 in words is "one billion, one hundred seventy-three million, six hundred twenty thousand, six hundred forty".