8420372 has 12 divisors (see below), whose sum is σ = 15602580. Its totient is φ = 3962496.

The previous prime is 8420351. The next prime is 8420393. The reversal of 8420372 is 2730248.

It is an interprime number because it is at equal distance from previous prime (8420351) and next prime (8420393).

It can be written as a sum of positive squares in 2 ways, for example, as 5550736 + 2869636 = 2356^2 + 1694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61847 + ... + 61982.

It is an arithmetic number, because the mean of its divisors is an integer number (1300215).

Almost surely, 2^8420372 is an apocalyptic number.

It is an amenable number.

8420372 is a deficient number, since it is larger than the sum of its proper divisors (7182208).

8420372 is a wasteful number, since it uses less digits than its factorization.

8420372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123850 (or 123848 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 8420372 is about 2901.7877248345. The cubic root of 8420372 is about 203.4434722366.

The spelling of 8420372 in words is "eight million, four hundred twenty thousand, three hundred seventy-two".