340021562240 has 64 divisors (see below), whose sum is σ = 813585762000. Its totient is φ = 135887867904.

The previous prime is 340021562219. The next prime is 340021562249. The reversal of 340021562240 is 42265120043.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×340021562240² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340021562249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487271 + ... + 957849.

Almost surely, 2^340021562240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340021562240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406792881000).

340021562240 is an abundant number, since it is smaller than the sum of its proper divisors (473564199760).

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

340021562240 is a wasteful number, since it uses less digits than its factorization.

340021562240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471727 (or 471715 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 340021562240 its reverse (42265120043), we get a palindrome (382286682283).

The spelling of 340021562240 in words is "three hundred forty billion, twenty-one million, five hundred sixty-two thousand, two hundred forty".