1390214880 has 384 divisors, whose sum is σ = 5120962560. Its totient is φ = 351866880.

The previous prime is 1390214873. The next prime is 1390214893. The reversal of 1390214880 is 884120931.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8324557 + ... + 8324723.

It is an arithmetic number, because the mean of its divisors is an integer number (13335840).

Almost surely, 2^1390214880 is an apocalyptic number.

1390214880 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 1390214880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2560481280).

1390214880 is an abundant number, since it is smaller than the sum of its proper divisors (3730747680).

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

1390214880 is a wasteful number, since it uses less digits than its factorization.

1390214880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1390214880 is about 37285.5854184965. The cubic root of 1390214880 is about 1116.0765353916.

It can be divided in two parts, 13902 and 14880, that added together give a palindrome (28782).

The spelling of 1390214880 in words is "one billion, three hundred ninety million, two hundred fourteen thousand, eight hundred eighty".