1011662420 has 24 divisors (see below), whose sum is σ = 2126817000. Its totient is φ = 404221952.

The previous prime is 1011662381. The next prime is 1011662437. The reversal of 1011662420 is 242661101.

It can be written as a sum of positive squares in 4 ways, for example, as 79459396 + 932203024 = 8914^2 + 30532^2 .

It is a congruent number.

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, 8645 + ... + 45804.

It is an arithmetic number, because the mean of its divisors is an integer number (88617375).

Almost surely, 2^1011662420 is an apocalyptic number.

1011662420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011662420 is an abundant number, since it is smaller than the sum of its proper divisors (1115154580).

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

1011662420 is a wasteful number, since it uses less digits than its factorization.

1011662420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55387 (or 55385 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1011662420 is about 31806.6411304306. The cubic root of 1011662420 is about 1003.8724580450.

The spelling of 1011662420 in words is "one billion, eleven million, six hundred sixty-two thousand, four hundred twenty".