1157970 has 64 divisors (see below), whose sum is σ = 3162240. Its totient is φ = 271040.

The previous prime is 1157969. The next prime is 1157977. The reversal of 1157970 is 797511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1157977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39916 + ... + 39944.

It is an arithmetic number, because the mean of its divisors is an integer number (49410).

2^1157970 is an apocalyptic number.

1157970 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 1157970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1581120).

1157970 is an abundant number, since it is smaller than the sum of its proper divisors (2004270).

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

1157970 is a wasteful number, since it uses less digits than its factorization.

1157970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 30.

The square root of 1157970 is about 1076.0901449228. The cubic root of 1157970 is about 105.0104298030.

The spelling of 1157970 in words is "one million, one hundred fifty-seven thousand, nine hundred seventy".