40720914 has 128 divisors (see below), whose sum is σ = 106444800. Its totient is φ = 11430720.

The previous prime is 40720903. The next prime is 40720931. The reversal of 40720914 is 41902704.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 573499 + ... + 573569.

It is an arithmetic number, because the mean of its divisors is an integer number (831600).

Almost surely, 2^40720914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40720914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53222400).

40720914 is an abundant number, since it is smaller than the sum of its proper divisors (65723886).

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

40720914 is a wasteful number, since it uses less digits than its factorization.

40720914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40720914 is about 6381.2940693875. The cubic root of 40720914 is about 344.0375443519.

It can be divided in two parts, 407 and 20914, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 40720914 in words is "forty million, seven hundred twenty thousand, nine hundred fourteen".