8721402 has 16 divisors (see below), whose sum is σ = 18044640. Its totient is φ = 2806832.

The previous prime is 8721379. The next prime is 8721403. The reversal of 8721402 is 2041278.

8721402 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 (8721403) 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, 24888 + ... + 25235.

It is an arithmetic number, because the mean of its divisors is an integer number (1127790).

Almost surely, 2^8721402 is an apocalyptic number.

8721402 is an abundant number, since it is smaller than the sum of its proper divisors (9323238).

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

8721402 is a wasteful number, since it uses less digits than its factorization.

8721402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50157.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 8721402 is about 2953.2019910599. The cubic root of 8721402 is about 205.8395237456.

The spelling of 8721402 in words is "eight million, seven hundred twenty-one thousand, four hundred two".