40670520 has 96 divisors (see below), whose sum is σ = 134159760. Its totient is φ = 9856000.

The previous prime is 40670503. The next prime is 40670521. The reversal of 40670520 is 2507604.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40670521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13120 + ... + 15920.

Almost surely, 2^40670520 is an apocalyptic number.

40670520 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 40670520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67079880).

40670520 is an abundant number, since it is smaller than the sum of its proper divisors (93489240).

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

40670520 is a wasteful number, since it uses less digits than its factorization.

40670520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837 (or 2822 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 40670520 is about 6377.3442748530. The cubic root of 40670520 is about 343.8955650167.

The spelling of 40670520 in words is "forty million, six hundred seventy thousand, five hundred twenty".