40234020 has 96 divisors (see below), whose sum is σ = 122774400. Its totient is φ = 9805824.

The previous prime is 40233983. The next prime is 40234027. The reversal of 40234020 is 2043204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (40234027) 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, 32452 + ... + 33668.

It is an arithmetic number, because the mean of its divisors is an integer number (1278900).

Almost surely, 2^40234020 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 40234020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61387200).

40234020 is an abundant number, since it is smaller than the sum of its proper divisors (82540380).

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

40234020 is a wasteful number, since it uses less digits than its factorization.

40234020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40234020 is about 6343.0292447694. The cubic root of 40234020 is about 342.6608405058.

Adding to 40234020 its reverse (2043204), we get a palindrome (42277224).

The spelling of 40234020 in words is "forty million, two hundred thirty-four thousand, twenty".