8420392 has 16 divisors (see below), whose sum is σ = 16475040. Its totient is φ = 4027056.

The previous prime is 8420351. The next prime is 8420393. The reversal of 8420392 is 2930248.

It is a self number, because there is not a number n which added to its sum of digits gives 8420392.

It is not an unprimeable number, because it can be changed into a prime (8420393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22698 + ... + 23065.

It is an arithmetic number, because the mean of its divisors is an integer number (1029690).

Almost surely, 2^8420392 is an apocalyptic number.

It is an amenable number.

8420392 is a deficient number, since it is larger than the sum of its proper divisors (8054648).

8420392 is a wasteful number, since it uses less digits than its factorization.

8420392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45792 (or 45788 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 8420392 is about 2901.7911709839. The cubic root of 8420392 is about 203.4436333090.

The spelling of 8420392 in words is "eight million, four hundred twenty thousand, three hundred ninety-two".