1356903720 has 96 divisors (see below), whose sum is σ = 4472133120. Its totient is φ = 356737920.

The previous prime is 1356903719. The next prime is 1356903749. The reversal of 1356903720 is 273096531.

It is a super-3 number, since 3×1356903720³ (a number of 28 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 984 + ... + 52103.

It is an arithmetic number, because the mean of its divisors is an integer number (46584720).

Almost surely, 2^1356903720 is an apocalyptic number.

1356903720 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 1356903720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2236066560).

1356903720 is an abundant number, since it is smaller than the sum of its proper divisors (3115229400).

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

1356903720 is a wasteful number, since it uses less digits than its factorization.

1356903720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53175 (or 53168 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 1356903720 is about 36836.1740684344. The cubic root of 1356903720 is about 1107.0902118251.

The spelling of 1356903720 in words is "one billion, three hundred fifty-six million, nine hundred three thousand, seven hundred twenty".