10491870 has 16 divisors (see below), whose sum is σ = 25180560. Its totient is φ = 2797824.

The previous prime is 10491869. The next prime is 10491913. The reversal of 10491870 is 7819401.

10491870 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10491870² = 220158672193800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 349729 = 10491870 / (1 + 0 + 4 + 9 + 1 + 8 + 7 + 0).

It is a Curzon number.

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, 174835 + ... + 174894.

It is an arithmetic number, because the mean of its divisors is an integer number (1573785).

Almost surely, 2^10491870 is an apocalyptic number.

10491870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10491870 is an abundant number, since it is smaller than the sum of its proper divisors (14688690).

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

10491870 is a wasteful number, since it uses less digits than its factorization.

10491870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349739.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 10491870 is about 3239.1156200420. The cubic root of 10491870 is about 218.9194257497.

The spelling of 10491870 in words is "ten million, four hundred ninety-one thousand, eight hundred seventy".