40298740 has 48 divisors (see below), whose sum is σ = 88526592. Its totient is φ = 15394176.

The previous prime is 40298723. The next prime is 40298743. The reversal of 40298740 is 4789204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40298696 and 40298705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40298743) 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, 39922 + ... + 40918.

It is an arithmetic number, because the mean of its divisors is an integer number (1844304).

Almost surely, 2^40298740 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 40298740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44263296).

40298740 is an abundant number, since it is smaller than the sum of its proper divisors (48227852).

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

40298740 is a wasteful number, since it uses less digits than its factorization.

40298740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 40298740 is about 6348.1288581755. The cubic root of 40298740 is about 342.8444755571.

It can be divided in two parts, 4029 and 8740, that added together give a square (12769 = 113²).

The spelling of 40298740 in words is "forty million, two hundred ninety-eight thousand, seven hundred forty".