7257740490 has 288 divisors, whose sum is σ = 25479432576. Its totient is φ = 1391869440.

The previous prime is 7257740467. The next prime is 7257740537. The reversal of 7257740490 is 940477527.

7257740490 is a `hidden beast` number, since 72 + 57 + 7 + 40 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1168072 + ... + 1174268.

It is an arithmetic number, because the mean of its divisors is an integer number (88470252).

Almost surely, 2^7257740490 is an apocalyptic number.

7257740490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7257740490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12739716288).

7257740490 is an abundant number, since it is smaller than the sum of its proper divisors (18221692086).

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

7257740490 is a wasteful number, since it uses less digits than its factorization.

7257740490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6254 (or 6238 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 7257740490 is about 85192.3734262639. The cubic root of 7257740490 is about 1936.1268680165.

It can be divided in two parts, 7257 and 740490, that added together give a palindrome (747747).

The spelling of 7257740490 in words is "seven billion, two hundred fifty-seven million, seven hundred forty thousand, four hundred ninety".