1020661224 has 32 divisors (see below), whose sum is σ = 2783622240. Its totient is φ = 309291200.

The previous prime is 1020661199. The next prime is 1020661231. The reversal of 1020661224 is 4221660201.

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

It is a junction number, because it is equal to n+sod(n) for n = 1020661194 and 1020661203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1932807 + ... + 1933334.

It is an arithmetic number, because the mean of its divisors is an integer number (86988195).

Almost surely, 2^1020661224 is an apocalyptic number.

It is an amenable number.

1020661224 is an abundant number, since it is smaller than the sum of its proper divisors (1762961016).

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

1020661224 is a wasteful number, since it uses less digits than its factorization.

1020661224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866161 (or 3866157 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1020661224 is about 31947.7890314807. The cubic root of 1020661224 is about 1006.8401799257.

The spelling of 1020661224 in words is "one billion, twenty million, six hundred sixty-one thousand, two hundred twenty-four".