1372705740 has 144 divisors (see below), whose sum is σ = 4812575040. Its totient is φ = 310210560.

The previous prime is 1372705739. The next prime is 1372705751. The reversal of 1372705740 is 475072731.

1372705740 is a `hidden beast` number, since 13 + 7 + 2 + 70 + 574 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1372705695 and 1372705704.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106020 + ... + 118260.

It is an arithmetic number, because the mean of its divisors is an integer number (33420660).

Almost surely, 2^1372705740 is an apocalyptic number.

1372705740 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 1372705740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2406287520).

1372705740 is an abundant number, since it is smaller than the sum of its proper divisors (3439869300).

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

1372705740 is a wasteful number, since it uses less digits than its factorization.

1372705740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12352 (or 12347 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 1372705740 is about 37050.0437246706. The cubic root of 1372705740 is about 1111.3712296405.

The spelling of 1372705740 in words is "one billion, three hundred seventy-two million, seven hundred five thousand, seven hundred forty".