407780248 has 16 divisors (see below), whose sum is σ = 797831280. Its totient is φ = 195025248.

The previous prime is 407780237. The next prime is 407780249. The reversal of 407780248 is 842087704.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 407780248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407780249) 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, 1107915 + ... + 1108282.

It is an arithmetic number, because the mean of its divisors is an integer number (49864455).

Almost surely, 2^407780248 is an apocalyptic number.

It is an amenable number.

407780248 is a deficient number, since it is larger than the sum of its proper divisors (390051032).

407780248 is a wasteful number, since it uses less digits than its factorization.

407780248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216226 (or 2216222 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 407780248 is about 20193.5694714927. The cubic root of 407780248 is about 741.5527706486.

The spelling of 407780248 in words is "four hundred seven million, seven hundred eighty thousand, two hundred forty-eight".