40929780 has 96 divisors (see below), whose sum is σ = 119242368. Its totient is φ = 10483200.

The previous prime is 40929769. The next prime is 40929793. The reversal of 40929780 is 8792904.

40929780 = T₉₇ + T₉₈ + ... + T₆₂₆.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193875 + ... + 194085.

It is an arithmetic number, because the mean of its divisors is an integer number (1242108).

Almost surely, 2^40929780 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 40929780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59621184).

40929780 is an abundant number, since it is smaller than the sum of its proper divisors (78312588).

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

40929780 is a wasteful number, since it uses less digits than its factorization.

40929780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 40929780 is about 6397.6386268685. The cubic root of 40929780 is about 344.6247547870.

The spelling of 40929780 in words is "forty million, nine hundred twenty-nine thousand, seven hundred eighty".