40634520 has 64 divisors (see below), whose sum is σ = 122411520. Its totient is φ = 10790784.

The previous prime is 40634509. The next prime is 40634543. The reversal of 40634520 is 2543604.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36289 + ... + 37391.

It is an arithmetic number, because the mean of its divisors is an integer number (1912680).

Almost surely, 2^40634520 is an apocalyptic number.

40634520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40634520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61205760).

40634520 is an abundant number, since it is smaller than the sum of its proper divisors (81777000).

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

40634520 is a wasteful number, since it uses less digits than its factorization.

40634520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40634520 is about 6374.5211584871. The cubic root of 40634520 is about 343.7940672982.

The spelling of 40634520 in words is "forty million, six hundred thirty-four thousand, five hundred twenty".