1011492720 has 240 divisors, whose sum is σ = 3924123840. Its totient is φ = 228704256.

The previous prime is 1011492701. The next prime is 1011492739. The reversal of 1011492720 is 272941101.

1011492720 is a `hidden beast` number, since 101 + 1 + 492 + 72 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1011492701) and next prime (1011492739).

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×1011492720² = 2046235045225996800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 487846 + ... + 489914.

It is an arithmetic number, because the mean of its divisors is an integer number (16350516).

Almost surely, 2^1011492720 is an apocalyptic number.

1011492720 is a gapful number since it is divisible by the number (10) 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 1011492720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1962061920).

1011492720 is an abundant number, since it is smaller than the sum of its proper divisors (2912631120).

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

1011492720 is a wasteful number, since it uses less digits than its factorization.

1011492720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1011492720 is about 31803.9733366760. The cubic root of 1011492720 is about 1003.8163238118.

The spelling of 1011492720 in words is "one billion, eleven million, four hundred ninety-two thousand, seven hundred twenty".