7542320280 has 128 divisors (see below), whose sum is σ = 24722668800. Its totient is φ = 1825574400.

The previous prime is 7542320267. The next prime is 7542320281. The reversal of 7542320280 is 820232457.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7542320281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 907986 + ... + 916254.

It is an arithmetic number, because the mean of its divisors is an integer number (193145850).

Almost surely, 2^7542320280 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 7542320280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12361334400).

7542320280 is an abundant number, since it is smaller than the sum of its proper divisors (17180348520).

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

7542320280 is a wasteful number, since it uses less digits than its factorization.

7542320280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8985 (or 8981 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 7542320280 is about 86846.5329187067. The cubic root of 7542320280 is about 1961.1086571054.

It can be divided in two parts, 75423 and 20280, that added together give a triangular number (95703 = T₄₃₇).

The spelling of 7542320280 in words is "seven billion, five hundred forty-two million, three hundred twenty thousand, two hundred eighty".