1401320715 has 16 divisors (see below), whose sum is σ = 2242641408. Its totient is φ = 747194976.

The previous prime is 1401320707. The next prime is 1401320717. The reversal of 1401320715 is 5170231041.

It is not a de Polignac number, because 1401320715 - 2³ = 1401320707 is a prime.

It is a super-2 number, since 2×1401320715² = 3927399492576222450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1401320717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78012 + ... + 94278.

It is an arithmetic number, because the mean of its divisors is an integer number (140165088).

Almost surely, 2^1401320715 is an apocalyptic number.

1401320715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1401320715 is a deficient number, since it is larger than the sum of its proper divisors (841320693).

1401320715 is a wasteful number, since it uses less digits than its factorization.

1401320715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22018.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1401320715 is about 37434.2185039303. The cubic root of 1401320715 is about 1119.0406099172.

Adding to 1401320715 its reverse (5170231041), we get a palindrome (6571551756).

The spelling of 1401320715 in words is "one billion, four hundred one million, three hundred twenty thousand, seven hundred fifteen".