15454532240 has 80 divisors (see below), whose sum is σ = 41221433088. Its totient is φ = 5278499328.

The previous prime is 15454532239. The next prime is 15454532263. The reversal of 15454532240 is 4223545451.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 15454532240.

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, 94814 + ... + 199746.

Almost surely, 2^15454532240 is an apocalyptic number.

15454532240 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 15454532240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20610716544).

15454532240 is an abundant number, since it is smaller than the sum of its proper divisors (25766900848).

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

15454532240 is a wasteful number, since it uses less digits than its factorization.

15454532240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105216 (or 105210 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 15454532240 in words is "fifteen billion, four hundred fifty-four million, five hundred thirty-two thousand, two hundred forty".