1390352208 has 320 divisors, whose sum is σ = 4782551040. Its totient is φ = 338190336.

The previous prime is 1390352179. The next prime is 1390352209. The reversal of 1390352208 is 8022530931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390352209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2495866 + ... + 2496422.

It is an arithmetic number, because the mean of its divisors is an integer number (14945472).

Almost surely, 2^1390352208 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 1390352208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2391275520).

1390352208 is an abundant number, since it is smaller than the sum of its proper divisors (3392198832).

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

1390352208 is a wasteful number, since it uses less digits than its factorization.

1390352208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1390352208 is about 37287.4269426036. The cubic root of 1390352208 is about 1116.1132835505.

The spelling of 1390352208 in words is "one billion, three hundred ninety million, three hundred fifty-two thousand, two hundred eight".