635742492 has 96 divisors (see below), whose sum is σ = 1888911360. Its totient is φ = 161603520.

The previous prime is 635742491. The next prime is 635742509. The reversal of 635742492 is 294247536.

It is a super-2 number, since 2×635742492² = 808337032268740128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635742491) 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, 36109 + ... + 50747.

It is an arithmetic number, because the mean of its divisors is an integer number (19676160).

Almost surely, 2^635742492 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 635742492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944455680).

635742492 is an abundant number, since it is smaller than the sum of its proper divisors (1253168868).

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

635742492 is a wasteful number, since it uses less digits than its factorization.

635742492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14711 (or 14709 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The square root of 635742492 is about 25213.9344807588. The cubic root of 635742492 is about 859.8586805828.

It can be divided in two parts, 63574 and 2492, that added together give a palindrome (66066).

The spelling of 635742492 in words is "six hundred thirty-five million, seven hundred forty-two thousand, four hundred ninety-two".