8621940 has 24 divisors (see below), whose sum is σ = 24141600. Its totient is φ = 2299168.

The previous prime is 8621939. The next prime is 8621947. The reversal of 8621940 is 491268.

8621940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 8621898 and 8621907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8621947) 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, 71790 + ... + 71909.

It is an arithmetic number, because the mean of its divisors is an integer number (1005900).

Almost surely, 2^8621940 is an apocalyptic number.

It is an amenable number.

8621940 is an abundant number, since it is smaller than the sum of its proper divisors (15519660).

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

8621940 is a wasteful number, since it uses less digits than its factorization.

8621940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143711 (or 143709 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 8621940 is about 2936.3140159050. The cubic root of 8621940 is about 205.0540408787.

The spelling of 8621940 in words is "eight million, six hundred twenty-one thousand, nine hundred forty".