40212464 has 30 divisors (see below), whose sum is σ = 81463536. Its totient is φ = 19228000.

The previous prime is 40212449. The next prime is 40212509. The reversal of 40212464 is 46421204.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6089 + ... + 10839.

Almost surely, 2^40212464 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 40212464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40731768).

40212464 is an abundant number, since it is smaller than the sum of its proper divisors (41251072).

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

40212464 is a wasteful number, since it uses less digits than its factorization.

40212464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805 (or 4776 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 40212464 is about 6341.3298289870. The cubic root of 40212464 is about 342.5996342878.

Adding to 40212464 its reverse (46421204), we get a palindrome (86633668).

The spelling of 40212464 in words is "forty million, two hundred twelve thousand, four hundred sixty-four".