1390221120 has 112 divisors (see below), whose sum is σ = 4436961408. Its totient is φ = 368793600.

The previous prime is 1390221083. The next prime is 1390221163. The reversal of 1390221120 is 211220931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185445 + ... + 192795.

Almost surely, 2^1390221120 is an apocalyptic number.

1390221120 is a gapful number since it is divisible by the number (10) 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 1390221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2218480704).

1390221120 is an abundant number, since it is smaller than the sum of its proper divisors (3046740288).

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

1390221120 is a wasteful number, since it uses less digits than its factorization.

1390221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568 (or 7558 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1390221120 is about 37285.6690968527. The cubic root of 1390221120 is about 1116.0782052311.

The spelling of 1390221120 in words is "one billion, three hundred ninety million, two hundred twenty-one thousand, one hundred twenty".