40277020 has 72 divisors (see below), whose sum is σ = 99915984. Its totient is φ = 13595904.

The previous prime is 40277011. The next prime is 40277021. The reversal of 40277020 is 2077204.

It is a junction number, because it is equal to n+sod(n) for n = 40276982 and 40277000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40277021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71259 + ... + 71821.

It is an arithmetic number, because the mean of its divisors is an integer number (1387722).

Almost surely, 2^40277020 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 40277020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49957992).

40277020 is an abundant number, since it is smaller than the sum of its proper divisors (59638964).

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

40277020 is a wasteful number, since it uses less digits than its factorization.

40277020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 40277020 is about 6346.4178872810. The cubic root of 40277020 is about 342.7828696587.

The spelling of 40277020 in words is "forty million, two hundred seventy-seven thousand, twenty".