7515728490 has 32 divisors (see below), whose sum is σ = 18138530880. Its totient is φ = 1992996224.

The previous prime is 7515728449. The next prime is 7515728497. The reversal of 7515728490 is 948275157.

It is not an unprimeable number, because it can be changed into a prime (7515728497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694419 + ... + 705158.

It is an arithmetic number, because the mean of its divisors is an integer number (566829090).

Almost surely, 2^7515728490 is an apocalyptic number.

7515728490 is an abundant number, since it is smaller than the sum of its proper divisors (10622802390).

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

7515728490 is a wasteful number, since it uses less digits than its factorization.

7515728490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399766.

The product of its (nonzero) digits is 705600, while the sum is 48.

The square root of 7515728490 is about 86693.3012983125. The cubic root of 7515728490 is about 1958.8011975404.

The spelling of 7515728490 in words is "seven billion, five hundred fifteen million, seven hundred twenty-eight thousand, four hundred ninety".