1370209920 has 128 divisors (see below), whose sum is σ = 4508628480. Its totient is φ = 353587200.

The previous prime is 1370209859. The next prime is 1370209949. The reversal of 1370209920 is 299020731.

It is a tau number, because it is divible by the number of its divisors (128).

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, 48010 + ... + 71030.

It is an arithmetic number, because the mean of its divisors is an integer number (35223660).

Almost surely, 2^1370209920 is an apocalyptic number.

1370209920 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 1370209920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2254314240).

1370209920 is an abundant number, since it is smaller than the sum of its proper divisors (3138418560).

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

1370209920 is a wasteful number, since it uses less digits than its factorization.

1370209920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23074 (or 23062 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1370209920 is about 37016.3466592801. The cubic root of 1370209920 is about 1110.6972650181.

The spelling of 1370209920 in words is "one billion, three hundred seventy million, two hundred nine thousand, nine hundred twenty".