712420220 has 48 divisors (see below), whose sum is σ = 1524652416. Its totient is φ = 279552000.

The previous prime is 712420187. The next prime is 712420243. The reversal of 712420220 is 22024217.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 712420192 and 712420201.

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, 781565 + ... + 782475.

It is an arithmetic number, because the mean of its divisors is an integer number (31763592).

Almost surely, 2^712420220 is an apocalyptic number.

It is an amenable number.

712420220 is an abundant number, since it is smaller than the sum of its proper divisors (812232196).

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

712420220 is a wasteful number, since it uses less digits than its factorization.

712420220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 712420220 is about 26691.2011719218. The cubic root of 712420220 is about 893.1246564016.

Adding to 712420220 its reverse (22024217), we get a palindrome (734444437).

The spelling of 712420220 in words is "seven hundred twelve million, four hundred twenty thousand, two hundred twenty".