1157490 has 40 divisors (see below), whose sum is σ = 3114540. Its totient is φ = 308448.

The previous prime is 1157489. The next prime is 1157491. The reversal of 1157490 is 947511.

1157490 is a `hidden beast` number, since 1 + 1 + 574 + 90 = 666.

It is an interprime number because it is at equal distance from previous prime (1157489) and next prime (1157491).

It can be written as a sum of positive squares in 2 ways, for example, as 1034289 + 123201 = 1017^2 + 351^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1157491) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 96 + ... + 1524.

2^1157490 is an apocalyptic number.

1157490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1157490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557270).

1157490 is an abundant number, since it is smaller than the sum of its proper divisors (1957050).

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

1157490 is a wasteful number, since it uses less digits than its factorization.

1157490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1157490 is about 1075.8670921633. The cubic root of 1157490 is about 104.9959182087.

It can be divided in two parts, 11574 and 90, that added together give a square (11664 = 108²).

The spelling of 1157490 in words is "one million, one hundred fifty-seven thousand, four hundred ninety".