396378420 has 24 divisors (see below), whose sum is σ = 1109859744. Its totient is φ = 105700896.

The previous prime is 396378407. The next prime is 396378491. The reversal of 396378420 is 24873693.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3303094 + ... + 3303213.

It is an arithmetic number, because the mean of its divisors is an integer number (46244156).

Almost surely, 2^396378420 is an apocalyptic number.

396378420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396378420 is an abundant number, since it is smaller than the sum of its proper divisors (713481324).

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

396378420 is a wasteful number, since it uses less digits than its factorization.

396378420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606319 (or 6606317 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 396378420 is about 19909.2546319545. The cubic root of 396378420 is about 734.5758856380.

The spelling of 396378420 in words is "three hundred ninety-six million, three hundred seventy-eight thousand, four hundred twenty".