10421988 has 24 divisors (see below), whose sum is σ = 24561600. Its totient is φ = 3439200.

The previous prime is 10421981. The next prime is 10422017. The reversal of 10421988 is 88912401.

10421988 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (10421981) 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, 3088 + ... + 5511.

It is an arithmetic number, because the mean of its divisors is an integer number (1023400).

Almost surely, 2^10421988 is an apocalyptic number.

It is an amenable number.

10421988 is an abundant number, since it is smaller than the sum of its proper divisors (14139612).

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

10421988 is a wasteful number, since it uses less digits than its factorization.

10421988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8707 (or 8705 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 10421988 is about 3228.3103939987. The cubic root of 10421988 is about 218.4322987560.

The spelling of 10421988 in words is "ten million, four hundred twenty-one thousand, nine hundred eighty-eight".