15422320240 has 40 divisors (see below), whose sum is σ = 36211932288. Its totient is φ = 6107846400.

The previous prime is 15422320237. The next prime is 15422320259. The reversal of 15422320240 is 4202322451.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×15422320240² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946272 + ... + 962431.

Almost surely, 2^15422320240 is an apocalyptic number.

15422320240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15422320240 is an abundant number, since it is smaller than the sum of its proper divisors (20789612048).

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

15422320240 is a wasteful number, since it uses less digits than its factorization.

15422320240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908817 (or 1908811 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 15422320240 its reverse (4202322451), we get a palindrome (19624642691).

The spelling of 15422320240 in words is "fifteen billion, four hundred twenty-two million, three hundred twenty thousand, two hundred forty".