1390526748 has 144 divisors (see below), whose sum is σ = 3923695776. Its totient is φ = 412439040.

The previous prime is 1390526743. The next prime is 1390526749. The reversal of 1390526748 is 8476250931.

1390526748 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

1390526748 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390526743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2268090 + ... + 2268702.

It is a 2-persistent number, because it is pandigital, and so is 2⋅1390526748 = 2781053496, but 3⋅1390526748 = 4171580244 is not.

It is a vampire number, since it can be written as 23907 ⋅ 58164 (with its own digits).

Almost surely, 2^1390526748 is an apocalyptic number.

1390526748 is a gapful number since it is divisible by the number (18) 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 1390526748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1961847888).

1390526748 is an abundant number, since it is smaller than the sum of its proper divisors (2533169028).

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

1390526748 is a wasteful number, since it uses less digits than its factorization.

1390526748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1390526748 is about 37289.7673363619. The cubic root of 1390526748 is about 1116.1599859281.

The spelling of 1390526748 in words is "one billion, three hundred ninety million, five hundred twenty-six thousand, seven hundred forty-eight".