40269780 has 144 divisors (see below), whose sum is σ = 130201344. Its totient is φ = 10053120.

The previous prime is 40269767. The next prime is 40269781. The reversal of 40269780 is 8796204.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40269781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 293872 + ... + 294008.

It is an arithmetic number, because the mean of its divisors is an integer number (904176).

Almost surely, 2^40269780 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 40269780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65100672).

40269780 is an abundant number, since it is smaller than the sum of its proper divisors (89931564).

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

40269780 is a wasteful number, since it uses less digits than its factorization.

40269780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40269780 is about 6345.8474611355. The cubic root of 40269780 is about 342.7623294376.

The spelling of 40269780 in words is "forty million, two hundred sixty-nine thousand, seven hundred eighty".