385226240 has 240 divisors, whose sum is σ = 1116772272. Its totient is φ = 126959616.

The previous prime is 385226161. The next prime is 385226251. The reversal of 385226240 is 42622583.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 385226197 and 385226206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4641239 + ... + 4641321.

Almost surely, 2^385226240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385226240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558386136).

385226240 is an abundant number, since it is smaller than the sum of its proper divisors (731546032).

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

385226240 is an equidigital number, since it uses as much as digits as its factorization.

385226240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 385226240 is about 19627.1811526770. The cubic root of 385226240 is about 727.6211046092.

The spelling of 385226240 in words is "three hundred eighty-five million, two hundred twenty-six thousand, two hundred forty".