881553640 has 64 divisors (see below), whose sum is σ = 2277720000. Its totient is φ = 303690240.

The previous prime is 881553613. The next prime is 881553671. The reversal of 881553640 is 46355188.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 881553593 and 881553602.

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, 44365 + ... + 61084.

It is an arithmetic number, because the mean of its divisors is an integer number (35589375).

Almost surely, 2^881553640 is an apocalyptic number.

It is an amenable number.

881553640 is an abundant number, since it is smaller than the sum of its proper divisors (1396166360).

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

881553640 is a wasteful number, since it uses less digits than its factorization.

881553640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105490 (or 105486 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 881553640 is about 29690.9689973231. The cubic root of 881553640 is about 958.8475899702.

The spelling of 881553640 in words is "eight hundred eighty-one million, five hundred fifty-three thousand, six hundred forty".