1390220496 has 140 divisors (see below), whose sum is σ = 4615677792. Its totient is φ = 397182528.

The previous prime is 1390220471. The next prime is 1390220537. The reversal of 1390220496 is 6940220931.

1390220496 is a `hidden beast` number, since 1 + 390 + 220 + 49 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1390220496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 73135 + ... + 90161.

Almost surely, 2^1390220496 is an apocalyptic number.

1390220496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390220496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2307838896).

1390220496 is an abundant number, since it is smaller than the sum of its proper divisors (3225457296).

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

1390220496 is an equidigital number, since it uses as much as digits as its factorization.

1390220496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17060 (or 17039 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1390220496 is about 37285.6607290256. The cubic root of 1390220496 is about 1116.0780382474.

The spelling of 1390220496 in words is "one billion, three hundred ninety million, two hundred twenty thousand, four hundred ninety-six".