612230040 has 96 divisors (see below), whose sum is σ = 2038327200. Its totient is φ = 159275520.

The previous prime is 612230029. The next prime is 612230051. The reversal of 612230040 is 40032216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (612230029) and next prime (612230051).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 612229995 and 612230022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5980 + ... + 35499.

It is an arithmetic number, because the mean of its divisors is an integer number (21232575).

Almost surely, 2^612230040 is an apocalyptic number.

612230040 is a gapful number since it is divisible by the number (60) 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 612230040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1019163600).

612230040 is an abundant number, since it is smaller than the sum of its proper divisors (1426097160).

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

612230040 is a wasteful number, since it uses less digits than its factorization.

612230040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41537 (or 41530 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 612230040 is about 24743.2827248124. The cubic root of 612230040 is about 849.1248385726.

Adding to 612230040 its reverse (40032216), we get a palindrome (652262256).

The spelling of 612230040 in words is "six hundred twelve million, two hundred thirty thousand, forty".