378157290 has 64 divisors (see below), whose sum is σ = 1047361536. Its totient is φ = 85591872.

The previous prime is 378157261. The next prime is 378157291. The reversal of 378157290 is 92751873.

378157290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (378157291) 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, 12889 + ... + 30371.

It is an arithmetic number, because the mean of its divisors is an integer number (16365024).

Almost surely, 2^378157290 is an apocalyptic number.

378157290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 378157290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523680768).

378157290 is an abundant number, since it is smaller than the sum of its proper divisors (669204246).

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

378157290 is a wasteful number, since it uses less digits than its factorization.

378157290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17603.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 378157290 is about 19446.2667368315. The cubic root of 378157290 is about 723.1429540429.

The spelling of 378157290 in words is "three hundred seventy-eight million, one hundred fifty-seven thousand, two hundred ninety".