40453020 has 60 divisors (see below), whose sum is σ = 126907704. Its totient is φ = 10787040.

The previous prime is 40453001. The next prime is 40453037. The reversal of 40453020 is 2035404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40452984 and 40453002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10866 + ... + 14105.

Almost surely, 2^40453020 is an apocalyptic number.

It is an amenable number.

40453020 is an abundant number, since it is smaller than the sum of its proper divisors (86454684).

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

40453020 is a wasteful number, since it uses less digits than its factorization.

40453020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24992 (or 24981 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40453020 is about 6360.2688622416. The cubic root of 40453020 is about 343.2814345365.

Adding to 40453020 its reverse (2035404), we get a palindrome (42488424).

It can be divided in two parts, 404530 and 20, that added together give a triangular number (404550 = T₈₉₉).

The spelling of 40453020 in words is "forty million, four hundred fifty-three thousand, twenty".