378406224 has 90 divisors (see below), whose sum is σ = 1231934730. Its totient is φ = 108114048.

The previous prime is 378406201. The next prime is 378406271. The reversal of 378406224 is 422604873.

It can be written as a sum of positive squares in only one way, i.e., 373262400 + 5143824 = 19320^2 + 2268^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 17 ways as a sum of consecutive naturals, for example, 19759 + ... + 33870.

Almost surely, 2^378406224 is an apocalyptic number.

It is an amenable number.

378406224 is an abundant number, since it is smaller than the sum of its proper divisors (853528506).

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

378406224 is a wasteful number, since it uses less digits than its factorization.

378406224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53657 (or 53641 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 378406224 is about 19452.6662439883. Note that the first 3 decimals coincide. The cubic root of 378406224 is about 723.3015964801.

The spelling of 378406224 in words is "three hundred seventy-eight million, four hundred six thousand, two hundred twenty-four".